This repository has been archived by the owner on Jan 13, 2022. It is now read-only.
/
CHANGES.txt
8552 lines (5900 loc) · 336 KB
/
CHANGES.txt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
Hadoop Change Log
Release 0.20.1 - Unreleased
INCOMPATIBLE CHANGES
HADOOP-5726. Remove pre-emption from capacity scheduler code base.
(Rahul Kumar Singh via yhemanth)
HADOOP-5881. Simplify memory monitoring and scheduling related
configuration. (Vinod Kumar Vavilapalli via yhemanth)
NEW FEATURES
HADOOP-6080. Introduce -skipTrash option to rm and rmr.
(Jakob Homan via shv)
HADOOP-3315. Add a new, binary file foramt, TFile. (Hong Tang via cdouglas)
IMPROVEMENTS
HADOOP-5711. Change Namenode file close log to info. (szetszwo)
HADOOP-5736. Update the capacity scheduler documentation for features
like memory based scheduling, job initialization and removal of pre-emption.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-4674. Fix fs help messages for -test, -text, -tail, -stat
and -touchz options. (Ravi Phulari via szetszwo)
HADOOP-4372. Improves the way history filenames are obtained and manipulated.
(Amar Kamat via ddas)
HADOOP-5897. Add name-node metrics to capture java heap usage.
(Suresh Srinivas via shv)
HDFS-438. Improve help message for space quota command. (Raghu Angadi)
MAPREDUCE-767. Remove the dependence on the CLI 2.0 snapshot.
(Amar Kamat via ddas)
HDFS-1111. Introduce getCorruptFileBlocks() for fsck. (Sriram Rao via shv)
OPTIMIZATIONS
BUG FIXES
HADOOP-5691. Makes org.apache.hadoop.mapreduce.Reducer concrete class
instead of abstract. (Amareshwari Sriramadasu via sharad)
HADOOP-5646. Fixes a problem in TestQueueCapacities.
(Vinod Kumar Vavilapalli via ddas)
HADOOP-5655. TestMRServerPorts fails on java.net.BindException. (Devaraj
Das via hairong)
HADOOP-5654. TestReplicationPolicy.<init> fails on java.net.BindException.
(hairong)
HADOOP-5688. Fix HftpFileSystem checksum path construction. (Tsz Wo
(Nicholas) Sze via cdouglas)
HADOOP-5213. Fix Null pointer exception caused when bzip2compression
was used and user closed a output stream without writing any data.
(Zheng Shao via dhruba)
HADOOP-5718. Remove the check for the default queue in capacity scheduler.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-5719. Remove jobs that failed initialization from the waiting queue
in the capacity scheduler. (Sreekanth Ramakrishnan via yhemanth)
HADOOP-4744. Attaching another fix to the jetty port issue. The TaskTracker
kills itself if it ever discovers that the port to which jetty is actually
bound is invalid (-1). (ddas)
HADOOP-5349. Fixes a problem in LocalDirAllocator to check for the return
path value that is returned for the case where the file we want to write
is of an unknown size. (Vinod Kumar Vavilapalli via ddas)
HADOOP-5636. Prevents a job from going to RUNNING state after it has been
KILLED (this used to happen when the SetupTask would come back with a
success after the job has been killed). (Amar Kamat via ddas)
HADOOP-5641. Fix a NullPointerException in capacity scheduler's memory
based scheduling code when jobs get retired. (yhemanth)
HADOOP-5828. Use absolute path for mapred.local.dir of JobTracker in
MiniMRCluster. (yhemanth)
HADOOP-4981. Fix capacity scheduler to schedule speculative tasks
correctly in the presence of High RAM jobs.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-5210. Solves a problem in the progress report of the reduce task.
(Ravi Gummadi via ddas)
HADOOP-5850. Fixes a problem to do with not being able to jobs with
0 maps/reduces. (Vinod K V via ddas)
HADOOP-5728. Fixed FSEditLog.printStatistics IndexOutOfBoundsException.
(Wang Xu via johan)
HADOOP-4626. Correct the API links in hdfs forrest doc so that they
point to the same version of hadoop. (szetszwo)
HADOOP-5883. Fixed tasktracker memory monitoring to account for
momentary spurts in memory usage due to java's fork() model.
(yhemanth)
HADOOP-5539. Fixes a problem to do with not preserving intermediate
output compression for merged data.
(Jothi Padmanabhan and Billy Pearson via ddas)
HADOOP-5932. Fixes a problem in capacity scheduler in computing
available memory on a tasktracker.
(Vinod Kumar Vavilapalli via yhemanth)
HADOOP-5648. Fixes a build issue in not being able to generate gridmix.jar
in hadoop binary tarball. (Giridharan Kesavan via gkesavan)
HADOOP-5908. Fixes a problem to do with ArithmeticException in the
JobTracker when there are jobs with 0 maps. (Amar Kamat via ddas)
HADOOP-5924. Fixes a corner case problem to do with job recovery with
empty history files. Also, after a JT restart, sends KillTaskAction to
tasks that report back but the corresponding job hasn't been initialized
yet. (Amar Kamat via ddas)
HADOOP-5882. Fixes a reducer progress update problem for new mapreduce
api. (Amareshwari Sriramadasu via sharad)
HADOOP-5746. Fixes a corner case problem in Streaming, where if an exception
happens in MROutputThread after the last call to the map/reduce method, the
exception goes undetected. (Amar Kamat via ddas)
HADOOP-5884. Fixes accounting in capacity scheduler so that high RAM jobs
take more slots. (Vinod Kumar Vavilapalli via yhemanth)
HADOOP-5937. Correct a safemode message in FSNamesystem. (Ravi Phulari
via szetszwo)
HADOOP-5869. Fix bug in assignment of setup / cleanup task that was
causing TestQueueCapacities to fail.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-5921. Fixes a problem in the JobTracker where it sometimes never used
to come up due to a system file creation on JobTracker's system-dir failing.
This problem would sometimes show up only when the FS for the system-dir
(usually HDFS) is started at nearly the same time as the JobTracker.
(Amar Kamat via ddas)
HADOOP-5920. Fixes a testcase failure for TestJobHistory.
(Amar Kamat via ddas)
HDFS-26. Better error message to users when commands fail because of
lack of quota. Allow quota to be set even if the limit is lower than
current consumption. (Boris Shkolnik via rangadi)
MAPREDUCE-2. Fixes a bug in KeyFieldBasedPartitioner in handling empty
keys. (Amar Kamat via sharad)
MAPREDUCE-130. Delete the jobconf copy from the log directory of the
JobTracker when the job is retired. (Amar Kamat via sharad)
MAPREDUCE-657. Fix hardcoded filesystem problem in CompletedJobStatusStore.
(Amar Kamat via sharad)
MAPREDUCE-179. Update progress in new RecordReaders. (cdouglas)
MAPREDUCE-124. Fix a bug in failure handling of abort task of
OutputCommiter. (Amareshwari Sriramadasu via sharad)
HADOOP-6139. Fix the FsShell help messages for rm and rmr. (Jakob Homan
via szetszwo)
HADOOP-6141. Fix a few bugs in 0.20 test-patch.sh. (Hong Tang via
szetszwo)
HADOOP-6145. Fix FsShell rm/rmr error messages when there is a FNFE.
(Jakob Homan via szetszwo)
MAPREDUCE-565. Fix partitioner to work with new API. (Owen O'Malley via
cdouglas)
MAPREDUCE-465. Fix a bug in MultithreadedMapRunner. (Amareshwari
Sriramadasu via sharad)
MAPREDUCE-18. Puts some checks to detect cases where jetty serves up
incorrect output during shuffle. (Ravi Gummadi via ddas)
MAPREDUCE-735. Fixes a problem in the KeyFieldHelper to do with
the end index for some inputs (Amar Kamat via ddas)
HADOOP-6150. Users should be able to instantiate comparator using TFile
API. (Hong Tang via rangadi)
MAPREDUCE-383. Fix a bug in Pipes combiner due to bytes count not
getting reset after the spill. (Christian Kunz via sharad)
MAPREDUCE-40. Keep memory management backwards compatible for job
configuration parameters and limits. (Rahul Kumar Singh via yhemanth)
MAPREDUCE-796. Fixes a ClassCastException in an exception log in
MultiThreadedMapRunner. (Amar Kamat via ddas)
HDFS-525. The SimpleDateFormat object in ListPathsServlet is not thread
safe. (Suresh Srinivas via szetszwo)
MAPREDUCE-838. Fixes a problem in the way commit of task outputs
happens. The bug was that even if commit failed, the task would
be declared as successful. (Amareshwari Sriramadasu via ddas)
MAPREDUCE-805. Fixes some deadlocks in the JobTracker due to the fact
the JobTracker lock hierarchy wasn't maintained in some JobInProgress
method calls. (Amar Kamat via ddas)
HDFS-167. Fix a bug in DFSClient that caused infinite retries on write.
(Bill Zeller via szetszwo)
HDFS-527. Remove unnecessary DFSClient constructors. (szetszwo)
MAPREDUCE-832. Reduce number of warning messages printed when
deprecated memory variables are used. (Rahul Kumar Singh via yhemanth)
MAPREDUCE-745. Fixes a testcase problem to do with generation of JobTracker
IDs. (Amar Kamat via ddas)
MAPREDUCE-834. Enables memory management on tasktrackers when old
memory management parameters are used in configuration.
(Sreekanth Ramakrishnan via yhemanth)
MAPREDUCE-818. Fixes Counters#getGroup API. (Amareshwari Sriramadasu
via sharad)
MAPREDUCE-807. Handles the AccessControlException during the deletion of
mapred.system.dir in the JobTracker. The JobTracker will bail out if it
encounters such an exception. (Amar Kamat via ddas)
HADOOP-6213. Remove commons dependency on commons-cli2. (Amar Kamat via
sharad)
MAPREDUCE-430. Fix a bug related to task getting stuck in case of
OOM error. (Amar Kamat via ddas)
Release 0.20.0 - 2009-04-15
INCOMPATIBLE CHANGES
HADOOP-4210. Fix findbugs warnings for equals implementations of mapred ID
classes. Removed public, static ID::read and ID::forName; made ID an
abstract class. (Suresh Srinivas via cdouglas)
HADOOP-4253. Fix various warnings generated by findbugs.
Following deprecated methods in RawLocalFileSystem are removed:
public String getName()
public void lock(Path p, boolean shared)
public void release(Path p)
(Suresh Srinivas via johan)
HADOOP-4618. Move http server from FSNamesystem into NameNode.
FSNamesystem.getNameNodeInfoPort() is removed.
FSNamesystem.getDFSNameNodeMachine() and FSNamesystem.getDFSNameNodePort()
replaced by FSNamesystem.getDFSNameNodeAddress().
NameNode(bindAddress, conf) is removed.
(shv)
HADOOP-4567. GetFileBlockLocations returns the NetworkTopology
information of the machines where the blocks reside. (dhruba)
HADOOP-4435. The JobTracker WebUI displays the amount of heap memory
in use. (dhruba)
HADOOP-4628. Move Hive into a standalone subproject. (omalley)
HADOOP-4188. Removes task's dependency on concrete filesystems.
(Sharad Agarwal via ddas)
HADOOP-1650. Upgrade to Jetty 6. (cdouglas)
HADOOP-3986. Remove static Configuration from JobClient. (Amareshwari
Sriramadasu via cdouglas)
JobClient::setCommandLineConfig is removed
JobClient::getCommandLineConfig is removed
JobShell, TestJobShell classes are removed
HADOOP-4422. S3 file systems should not create bucket.
(David Phillips via tomwhite)
HADOOP-4035. Support memory based scheduling in capacity scheduler.
(Vinod Kumar Vavilapalli via yhemanth)
HADOOP-3497. Fix bug in overly restrictive file globbing with a
PathFilter. (tomwhite)
HADOOP-4445. Replace running task counts with running task
percentage in capacity scheduler UI. (Sreekanth Ramakrishnan via
yhemanth)
HADOOP-4631. Splits the configuration into three parts - one for core,
one for mapred and the last one for HDFS. (Sharad Agarwal via cdouglas)
HADOOP-3344. Fix libhdfs build to use autoconf and build the same
architecture (32 vs 64 bit) of the JVM running Ant. The libraries for
pipes, utils, and libhdfs are now all in c++/<os_osarch_jvmdatamodel>/lib.
(Giridharan Kesavan via nigel)
HADOOP-4874. Remove LZO codec because of licensing issues. (omalley)
HADOOP-4970. The full path name of a file is preserved inside Trash.
(Prasad Chakka via dhruba)
HADOOP-4103. NameNode keeps a count of missing blocks. It warns on
WebUI if there are such blocks. '-report' and '-metaSave' have extra
info to track such blocks. (Raghu Angadi)
HADOOP-4783. Change permissions on history files on the jobtracker
to be only group readable instead of world readable.
(Amareshwari Sriramadasu via yhemanth)
HADOOP-5531. Removed Chukwa from Hadoop 0.20.0. (nigel)
NEW FEATURES
HADOOP-4575. Add a proxy service for relaying HsftpFileSystem requests.
Includes client authentication via user certificates and config-based
access control. (Kan Zhang via cdouglas)
HADOOP-4661. Add DistCh, a new tool for distributed ch{mod,own,grp}.
(szetszwo)
HADOOP-4709. Add several new features and bug fixes to Chukwa.
Added Hadoop Infrastructure Care Center (UI for visualize data collected
by Chukwa)
Added FileAdaptor for streaming small file in one chunk
Added compression to archive and demux output
Added unit tests and validation for agent, collector, and demux map
reduce job
Added database loader for loading demux output (sequence file) to jdbc
connected database
Added algorithm to distribute collector load more evenly
(Jerome Boulon, Eric Yang, Andy Konwinski, Ariel Rabkin via cdouglas)
HADOOP-4179. Add Vaidya tool to analyze map/reduce job logs for performanc
problems. (Suhas Gogate via omalley)
HADOOP-4029. Add NameNode storage information to the dfshealth page and
move DataNode information to a separated page. (Boris Shkolnik via
szetszwo)
HADOOP-4348. Add service-level authorization for Hadoop. (acmurthy)
HADOOP-4826. Introduce admin command saveNamespace. (shv)
HADOOP-3063 BloomMapFile - fail-fast version of MapFile for sparsely
populated key space (Andrzej Bialecki via stack)
HADOOP-1230. Add new map/reduce API and deprecate the old one. Generally,
the old code should work without problem. The new api is in
org.apache.hadoop.mapreduce and the old classes in org.apache.hadoop.mapred
are deprecated. Differences in the new API:
1. All of the methods take Context objects that allow us to add new
methods without breaking compatability.
2. Mapper and Reducer now have a "run" method that is called once and
contains the control loop for the task, which lets applications
replace it.
3. Mapper and Reducer by default are Identity Mapper and Reducer.
4. The FileOutputFormats use part-r-00000 for the output of reduce 0 and
part-m-00000 for the output of map 0.
5. The reduce grouping comparator now uses the raw compare instead of
object compare.
6. The number of maps in FileInputFormat is controlled by min and max
split size rather than min size and the desired number of maps.
(omalley)
HADOOP-3305. Use Ivy to manage dependencies. (Giridharan Kesavan
and Steve Loughran via cutting)
IMPROVEMENTS
HADOOP-4565. Added CombineFileInputFormat to use data locality information
to create splits. (dhruba via zshao)
HADOOP-4749. Added a new counter REDUCE_INPUT_BYTES. (Yongqiang He via
zshao)
HADOOP-4234. Fix KFS "glue" layer to allow applications to interface
with multiple KFS metaservers. (Sriram Rao via lohit)
HADOOP-4245. Update to latest version of KFS "glue" library jar.
(Sriram Rao via lohit)
HADOOP-4244. Change test-patch.sh to check Eclipse classpath no matter
it is run by Hudson or not. (szetszwo)
HADOOP-3180. Add name of missing class to WritableName.getClass
IOException. (Pete Wyckoff via omalley)
HADOOP-4178. Make the capacity scheduler's default values configurable.
(Sreekanth Ramakrishnan via omalley)
HADOOP-4262. Generate better error message when client exception has null
message. (stevel via omalley)
HADOOP-4226. Refactor and document LineReader to make it more readily
understandable. (Yuri Pradkin via cdouglas)
HADOOP-4238. When listing jobs, if scheduling information isn't available
print NA instead of empty output. (Sreekanth Ramakrishnan via johan)
HADOOP-4284. Support filters that apply to all requests, or global filters,
to HttpServer. (Kan Zhang via cdouglas)
HADOOP-4276. Improve the hashing functions and deserialization of the
mapred ID classes. (omalley)
HADOOP-4485. Add a compile-native ant task, as a shorthand. (enis)
HADOOP-4454. Allow # comments in slaves file. (Rama Ramasamy via omalley)
HADOOP-3461. Remove hdfs.StringBytesWritable. (szetszwo)
HADOOP-4437. Use Halton sequence instead of java.util.Random in
PiEstimator. (szetszwo)
HADOOP-4572. Change INode and its sub-classes to package private.
(szetszwo)
HADOOP-4187. Does a runtime lookup for JobConf/JobConfigurable, and if
found, invokes the appropriate configure method. (Sharad Agarwal via ddas)
HADOOP-4453. Improve ssl configuration and handling in HsftpFileSystem,
particularly when used with DistCp. (Kan Zhang via cdouglas)
HADOOP-4583. Several code optimizations in HDFS. (Suresh Srinivas via
szetszwo)
HADOOP-3923. Remove org.apache.hadoop.mapred.StatusHttpServer. (szetszwo)
HADOOP-4622. Explicitly specify interpretor for non-native
pipes binaries. (Fredrik Hedberg via johan)
HADOOP-4505. Add a unit test to test faulty setup task and cleanup
task killing the job. (Amareshwari Sriramadasu via johan)
HADOOP-4608. Don't print a stack trace when the example driver gets an
unknown program to run. (Edward Yoon via omalley)
HADOOP-4645. Package HdfsProxy contrib project without the extra level
of directories. (Kan Zhang via omalley)
HADOOP-4126. Allow access to HDFS web UI on EC2 (tomwhite via omalley)
HADOOP-4612. Removes RunJar's dependency on JobClient.
(Sharad Agarwal via ddas)
HADOOP-4185. Adds setVerifyChecksum() method to FileSystem.
(Sharad Agarwal via ddas)
HADOOP-4523. Prevent too many tasks scheduled on a node from bringing
it down by monitoring for cumulative memory usage across tasks.
(Vinod Kumar Vavilapalli via yhemanth)
HADOOP-4640. Adds an input format that can split lzo compressed
text files. (johan)
HADOOP-4666. Launch reduces only after a few maps have run in the
Fair Scheduler. (Matei Zaharia via johan)
HADOOP-4339. Remove redundant calls from FileSystem/FsShell when
generating/processing ContentSummary. (David Phillips via cdouglas)
HADOOP-2774. Add counters tracking records spilled to disk in MapTask and
ReduceTask. (Ravi Gummadi via cdouglas)
HADOOP-4513. Initialize jobs asynchronously in the capacity scheduler.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-4649. Improve abstraction for spill indices. (cdouglas)
HADOOP-3770. Add gridmix2, an iteration on the gridmix benchmark. (Runping
Qi via cdouglas)
HADOOP-4708. Add support for dfsadmin commands in TestCLI. (Boris Shkolnik
via cdouglas)
HADOOP-4758. Add a splitter for metrics contexts to support more than one
type of collector. (cdouglas)
HADOOP-4722. Add tests for dfsadmin quota error messages. (Boris Shkolnik
via cdouglas)
HADOOP-4690. fuse-dfs - create source file/function + utils + config +
main source files. (pete wyckoff via mahadev)
HADOOP-3750. Fix and enforce module dependencies. (Sharad Agarwal via
tomwhite)
HADOOP-4747. Speed up FsShell::ls by removing redundant calls to the
filesystem. (David Phillips via cdouglas)
HADOOP-4305. Improves the blacklisting strategy, whereby, tasktrackers
that are blacklisted are not given tasks to run from other jobs, subject
to the following conditions (all must be met):
1) The TaskTracker has been blacklisted by at least 4 jobs (configurable)
2) The TaskTracker has been blacklisted 50% more number of times than
the average (configurable)
3) The cluster has less than 50% trackers blacklisted
Once in 24 hours, a TaskTracker blacklisted for all jobs is given a chance.
Restarting the TaskTracker moves it out of the blacklist.
(Amareshwari Sriramadasu via ddas)
HADOOP-4688. Modify the MiniMRDFSSort unit test to spill multiple times,
exercising the map-side merge code. (cdouglas)
HADOOP-4737. Adds the KILLED notification when jobs get killed.
(Amareshwari Sriramadasu via ddas)
HADOOP-4728. Add a test exercising different namenode configurations.
(Boris Shkolnik via cdouglas)
HADOOP-4807. Adds JobClient commands to get the active/blacklisted tracker
names. Also adds commands to display running/completed task attempt IDs.
(ddas)
HADOOP-4699. Remove checksum validation from map output servlet. (cdouglas)
HADOOP-4838. Added a registry to automate metrics and mbeans management.
(Sanjay Radia via acmurthy)
HADOOP-3136. Fixed the default scheduler to assign multiple tasks to each
tasktracker per heartbeat, when feasible. To ensure locality isn't hurt
too badly, the scheudler will not assign more than one off-switch task per
heartbeat. The heartbeat interval is also halved since the task-tracker is
fixed to no longer send out heartbeats on each task completion. A
slow-start for scheduling reduces is introduced to ensure that reduces
aren't started till sufficient number of maps are done, else reduces of
jobs whose maps aren't scheduled might swamp the cluster.
Configuration changes to mapred-default.xml:
add mapred.reduce.slowstart.completed.maps
(acmurthy)
HADOOP-4545. Add example and test case of secondary sort for the reduce.
(omalley)
HADOOP-4753. Refactor gridmix2 to reduce code duplication. (cdouglas)
HADOOP-4909. Fix Javadoc and make some of the API more consistent in their
use of the JobContext instead of Configuration. (omalley)
HADOOP-4830. Add end-to-end test cases for testing queue capacities.
(Vinod Kumar Vavilapalli via yhemanth)
HADOOP-4980. Improve code layout of capacity scheduler to make it
easier to fix some blocker bugs. (Vivek Ratan via yhemanth)
HADOOP-4916. Make user/location of Chukwa installation configurable by an
external properties file. (Eric Yang via cdouglas)
HADOOP-4950. Make the CompressorStream, DecompressorStream,
BlockCompressorStream, and BlockDecompressorStream public to facilitate
non-Hadoop codecs. (omalley)
HADOOP-4843. Collect job history and configuration in Chukwa. (Eric Yang
via cdouglas)
HADOOP-5030. Build Chukwa RPM to install into configured directory. (Eric
Yang via cdouglas)
HADOOP-4828. Updates documents to do with configuration (HADOOP-4631).
(Sharad Agarwal via ddas)
HADOOP-4939. Adds a test that would inject random failures for tasks in
large jobs and would also inject TaskTracker failures. (ddas)
HADOOP-4920. Stop storing Forrest output in Subversion. (cutting)
HADOOP-4944. A configuration file can include other configuration
files. (Rama Ramasamy via dhruba)
HADOOP-4804. Provide Forrest documentation for the Fair Scheduler.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-5248. A testcase that checks for the existence of job directory
after the job completes. Fails if it exists. (ddas)
HADOOP-4664. Introduces multiple job initialization threads, where the
number of threads are configurable via mapred.jobinit.threads.
(Matei Zaharia and Jothi Padmanabhan via ddas)
HADOOP-4191. Adds a testcase for JobHistory. (Ravi Gummadi via ddas)
HADOOP-5466. Change documenation CSS style for headers and code. (Corinne
Chandel via szetszwo)
HADOOP-5275. Add ivy directory and files to built tar.
(Giridharan Kesavan via nigel)
HADOOP-5468. Add sub-menus to forrest documentation and make some minor
edits. (Corinne Chandel via szetszwo)
HADOOP-5437. Fix TestMiniMRDFSSort to properly test jvm-reuse. (omalley)
HADOOP-5521. Removes dependency of TestJobInProgress on RESTART_COUNT
JobHistory tag. (Ravi Gummadi via ddas)
HADOOP-5714. Add a metric for NameNode getFileInfo operation. (Jakob Homan
via szetszwo)
OPTIMIZATIONS
HADOOP-3293. Fixes FileInputFormat to do provide locations for splits
based on the rack/host that has the most number of bytes.
(Jothi Padmanabhan via ddas)
HADOOP-4683. Fixes Reduce shuffle scheduler to invoke
getMapCompletionEvents in a separate thread. (Jothi Padmanabhan
via ddas)
BUG FIXES
HADOOP-5379. CBZip2InputStream to throw IOException on data crc error.
(Rodrigo Schmidt via zshao)
HADOOP-5326. Fixes CBZip2OutputStream data corruption problem.
(Rodrigo Schmidt via zshao)
HADOOP-4204. Fix findbugs warnings related to unused variables, naive
Number subclass instantiation, Map iteration, and badly scoped inner
classes. (Suresh Srinivas via cdouglas)
HADOOP-4207. Update derby jar file to release 10.4.2 release.
(Prasad Chakka via dhruba)
HADOOP-4325. SocketInputStream.read() should return -1 in case EOF.
(Raghu Angadi)
HADOOP-4408. FsAction functions need not create new objects. (cdouglas)
HADOOP-4440. TestJobInProgressListener tests for jobs killed in queued
state (Amar Kamat via ddas)
HADOOP-4346. Implement blocking connect so that Hadoop is not affected
by selector problem with JDK default implementation. (Raghu Angadi)
HADOOP-4388. If there are invalid blocks in the transfer list, Datanode
should handle them and keep transferring the remaining blocks. (Suresh
Srinivas via szetszwo)
HADOOP-4587. Fix a typo in Mapper javadoc. (Koji Noguchi via szetszwo)
HADOOP-4530. In fsck, HttpServletResponse sendError fails with
IllegalStateException. (hairong)
HADOOP-4377. Fix a race condition in directory creation in
NativeS3FileSystem. (David Phillips via cdouglas)
HADOOP-4621. Fix javadoc warnings caused by duplicate jars. (Kan Zhang via
cdouglas)
HADOOP-4566. Deploy new hive code to support more types.
(Zheng Shao via dhruba)
HADOOP-4571. Add chukwa conf files to svn:ignore list. (Eric Yang via
szetszwo)
HADOOP-4589. Correct PiEstimator output messages and improve the code
readability. (szetszwo)
HADOOP-4650. Correct a mismatch between the default value of
local.cache.size in the config and the source. (Jeff Hammerbacher via
cdouglas)
HADOOP-4606. Fix cygpath error if the log directory does not exist.
(szetszwo via omalley)
HADOOP-4141. Fix bug in ScriptBasedMapping causing potential infinite
loop on misconfigured hadoop-site. (Aaron Kimball via tomwhite)
HADOOP-4691. Correct a link in the javadoc of IndexedSortable. (szetszwo)
HADOOP-4598. '-setrep' command skips under-replicated blocks. (hairong)
HADOOP-4429. Set defaults for user, group in UnixUserGroupInformation so
login fails more predictably when misconfigured. (Alex Loddengaard via
cdouglas)
HADOOP-4676. Fix broken URL in blacklisted tasktrackers page. (Amareshwari
Sriramadasu via cdouglas)
HADOOP-3422 Ganglia counter metrics are all reported with the metric
name "value", so the counter values can not be seen. (Jason Attributor
and Brian Bockelman via stack)
HADOOP-4704. Fix javadoc typos "the the". (szetszwo)
HADOOP-4677. Fix semantics of FileSystem::getBlockLocations to return
meaningful values. (Hong Tang via cdouglas)
HADOOP-4669. Use correct operator when evaluating whether access time is
enabled (Dhruba Borthakur via cdouglas)
HADOOP-4732. Pass connection and read timeouts in the correct order when
setting up fetch in reduce. (Amareshwari Sriramadasu via cdouglas)
HADOOP-4558. Fix capacity reclamation in capacity scheduler.
(Amar Kamat via yhemanth)
HADOOP-4770. Fix rungridmix_2 script to work with RunJar. (cdouglas)
HADOOP-4738. When using git, the saveVersion script will use only the
commit hash for the version and not the message, which requires escaping.
(cdouglas)
HADOOP-4576. Show pending job count instead of task count in the UI per
queue in capacity scheduler. (Sreekanth Ramakrishnan via yhemanth)
HADOOP-4623. Maintain running tasks even if speculative execution is off.
(Amar Kamat via yhemanth)
HADOOP-4786. Fix broken compilation error in
TestTrackerBlacklistAcrossJobs. (yhemanth)
HADOOP-4785. Fixes theJobTracker heartbeat to not make two calls to
System.currentTimeMillis(). (Amareshwari Sriramadasu via ddas)
HADOOP-4792. Add generated Chukwa configuration files to version control
ignore lists. (cdouglas)
HADOOP-4796. Fix Chukwa test configuration, remove unused components. (Eric
Yang via cdouglas)
HADOOP-4708. Add binaries missed in the initial checkin for Chukwa. (Eric
Yang via cdouglas)
HADOOP-4805. Remove black list collector from Chukwa Agent HTTP Sender.
(Eric Yang via cdouglas)
HADOOP-4837. Move HADOOP_CONF_DIR configuration to chukwa-env.sh (Jerome
Boulon via cdouglas)
HADOOP-4825. Use ps instead of jps for querying process status in Chukwa.
(Eric Yang via cdouglas)
HADOOP-4844. Fixed javadoc for
org.apache.hadoop.fs.permission.AccessControlException to document that
it's deprecated in favour of
org.apache.hadoop.security.AccessControlException. (acmurthy)
HADOOP-4706. Close the underlying output stream in
IFileOutputStream::close. (Jothi Padmanabhan via cdouglas)
HADOOP-4855. Fixed command-specific help messages for refreshServiceAcl in
DFSAdmin and MRAdmin. (acmurthy)
HADOOP-4820. Remove unused method FSNamesystem::deleteInSafeMode. (Suresh
Srinivas via cdouglas)
HADOOP-4698. Lower io.sort.mb to 10 in the tests and raise the junit memory
limit to 512m from 256m. (Nigel Daley via cdouglas)
HADOOP-4860. Split TestFileTailingAdapters into three separate tests to
avoid contention. (Eric Yang via cdouglas)
HADOOP-3921. Fixed clover (code coverage) target to work with JDK 6.
(tomwhite via nigel)
HADOOP-4845. Modify the reduce input byte counter to record only the
compressed size and add a human-readable label. (Yongqiang He via cdouglas)
HADOOP-4458. Add a test creating symlinks in the working directory.
(Amareshwari Sriramadasu via cdouglas)
HADOOP-4879. Fix org.apache.hadoop.mapred.Counters to correctly define
Object.equals rather than depend on contentEquals api. (omalley via
acmurthy)
HADOOP-4791. Fix rpm build process for Chukwa. (Eric Yang via cdouglas)
HADOOP-4771. Correct initialization of the file count for directories
with quotas. (Ruyue Ma via shv)
HADOOP-4878. Fix eclipse plugin classpath file to point to ivy's resolved
lib directory and added the same to test-patch.sh. (Giridharan Kesavan via
acmurthy)
HADOOP-4774. Fix default values of some capacity scheduler configuration
items which would otherwise not work on a fresh checkout.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-4876. Fix capacity scheduler reclamation by updating count of
pending tasks correctly. (Sreekanth Ramakrishnan via yhemanth)
HADOOP-4849. Documentation for Service Level Authorization implemented in
HADOOP-4348. (acmurthy)
HADOOP-4827. Replace Consolidator with Aggregator macros in Chukwa (Eric
Yang via cdouglas)
HADOOP-4894. Correctly parse ps output in Chukwa jettyCollector.sh. (Ari
Rabkin via cdouglas)
HADOOP-4892. Close fds out of Chukwa ExecPlugin. (Ari Rabkin via cdouglas)
HADOOP-4889. Fix permissions in RPM packaging. (Eric Yang via cdouglas)
HADOOP-4869. Fixes the TT-JT heartbeat to have an explicit flag for
restart apart from the initialContact flag that there was earlier.
(Amareshwari Sriramadasu via ddas)
HADOOP-4716. Fixes ReduceTask.java to clear out the mapping between
hosts and MapOutputLocation upon a JT restart (Amar Kamat via ddas)
HADOOP-4880. Removes an unnecessary testcase from TestJobTrackerRestart.
(Amar Kamat via ddas)
HADOOP-4924. Fixes a race condition in TaskTracker re-init. (ddas)
HADOOP-4854. Read reclaim capacity interval from capacity scheduler
configuration. (Sreekanth Ramakrishnan via yhemanth)
HADOOP-4896. HDFS Fsck does not load HDFS configuration. (Raghu Angadi)
HADOOP-4956. Creates TaskStatus for failed tasks with an empty Counters
object instead of null. (ddas)
HADOOP-4979. Fix capacity scheduler to block cluster for failed high
RAM requirements across task types. (Vivek Ratan via yhemanth)
HADOOP-4949. Fix native compilation. (Chris Douglas via acmurthy)
HADOOP-4787. Fixes the testcase TestTrackerBlacklistAcrossJobs which was
earlier failing randomly. (Amareshwari Sriramadasu via ddas)
HADOOP-4914. Add description fields to Chukwa init.d scripts (Eric Yang via
cdouglas)
HADOOP-4884. Make tool tip date format match standard HICC format. (Eric
Yang via cdouglas)
HADOOP-4925. Make Chukwa sender properties configurable. (Ari Rabkin via
cdouglas)
HADOOP-4947. Make Chukwa command parsing more forgiving of whitespace. (Ari
Rabkin via cdouglas)
HADOOP-5026. Make chukwa/bin scripts executable in repository. (Andy
Konwinski via cdouglas)
HADOOP-4977. Fix a deadlock between the reclaimCapacity and assignTasks
in capacity scheduler. (Vivek Ratan via yhemanth)
HADOOP-4988. Fix reclaim capacity to work even when there are queues with
no capacity. (Vivek Ratan via yhemanth)
HADOOP-5065. Remove generic parameters from argument to
setIn/OutputFormatClass so that it works with SequenceIn/OutputFormat.
(cdouglas via omalley)
HADOOP-4818. Pass user config to instrumentation API. (Eric Yang via
cdouglas)
HADOOP-4993. Fix Chukwa agent configuration and startup to make it both
more modular and testable. (Ari Rabkin via cdouglas)
HADOOP-5048. Fix capacity scheduler to correctly cleanup jobs that are
killed after initialization, but before running.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-4671. Mark loop control variables shared between threads as
volatile. (cdouglas)
HADOOP-5079. HashFunction inadvertently destroys some randomness
(Jonathan Ellis via stack)
HADOOP-4999. A failure to write to FsEditsLog results in
IndexOutOfBounds exception. (Boris Shkolnik via rangadi)
HADOOP-5139. Catch IllegalArgumentException during metrics registration
in RPC. (Hairong Kuang via szetszwo)
HADOOP-5085. Copying a file to local with Crc throws an exception.
(hairong)
HADOOP-4759. Removes temporary output directory for failed and
killed tasks by launching special CLEANUP tasks for the same.
(Amareshwari Sriramadasu via ddas)
HADOOP-5211. Fix check for job completion in TestSetupAndCleanupFailure.
(enis)
HADOOP-5254. The Configuration class should be able to work with XML
parsers that do not support xmlinclude. (Steve Loughran via dhruba)
HADOOP-4692. Namenode in infinite loop for replicating/deleting corrupt
blocks. (hairong)
HADOOP-5255. Fix use of Math.abs to avoid overflow. (Jonathan Ellis via
cdouglas)
HADOOP-5269. Fixes a problem to do with tasktracker holding on to
FAILED_UNCLEAN or KILLED_UNCLEAN tasks forever. (Amareshwari Sriramadasu
via ddas)
HADOOP-5214. Fixes a ConcurrentModificationException while the Fairshare
Scheduler accesses the tasktrackers stored by the JobTracker.
(Rahul Kumar Singh via yhemanth)
HADOOP-5233. Addresses the three issues - Race condition in updating
status, NPE in TaskTracker task localization when the conf file is missing
(HADOOP-5234) and NPE in handling KillTaskAction of a cleanup task
(HADOOP-5235). (Amareshwari Sriramadasu via ddas)
HADOOP-5247. Introduces a broadcast of KillJobAction to all trackers when
a job finishes. This fixes a bunch of problems to do with NPE when a
completed job is not in memory and a tasktracker comes to the jobtracker
with a status report of a task belonging to that job. (Amar Kamat via ddas)
HADOOP-5282. Fixed job history logs for task attempts that are
failed by the JobTracker, say due to lost task trackers. (Amar
Kamat via yhemanth)
HADOOP-4963. Fixes a logging to do with getting the location of
map output file. (Amareshwari Sriramadasu via ddas)
HADOOP-5292. Fix NPE in KFS::getBlockLocations. (Sriram Rao via lohit)
HADOOP-5241. Fixes a bug in disk-space resource estimation. Makes
the estimation formula linear where blowUp =
Total-Output/Total-Input. (Sharad Agarwal via ddas)
HADOOP-5142. Fix MapWritable#putAll to store key/value classes.
(Do??acan G??ney via enis)
HADOOP-4744. Workaround for jetty6 returning -1 when getLocalPort
is invoked on the connector. The workaround patch retries a few
times before failing. (Jothi Padmanabhan via yhemanth)
HADOOP-5280. Adds a check to prevent a task state transition from
FAILED to any of UNASSIGNED, RUNNING, COMMIT_PENDING or
SUCCEEDED. (ddas)
HADOOP-5272. Fixes a problem to do with detecting whether an
attempt is the first attempt of a Task. This affects JobTracker
restart. (Amar Kamat via ddas)
HADOOP-5306. Fixes a problem to do with logging/parsing the http port of a
lost tracker. Affects JobTracker restart. (Amar Kamat via ddas)
HADOOP-5111. Fix Job::set* methods to work with generics. (cdouglas)
HADOOP-5274. Fix gridmix2 dependency on wordcount example. (cdouglas)
HADOOP-5145. Balancer sometimes runs out of memory after running
days or weeks. (hairong)
HADOOP-5338. Fix jobtracker restart to clear task completion
events cached by tasktrackers forcing them to fetch all events
afresh, thus avoiding missed task completion events on the
tasktrackers. (Amar Kamat via yhemanth)
HADOOP-4695. Change TestGlobalFilter so that it allows a web page to be
filtered more than once for a single access. (Kan Zhang via szetszwo)
HADOOP-5298. Change TestServletFilter so that it allows a web page to be
filtered more than once for a single access. (szetszwo)
HADOOP-5432. Disable ssl during unit tests in hdfsproxy, as it is unused
and causes failures. (cdouglas)
HADOOP-5416. Correct the shell command "fs -test" forrest doc description.
(Ravi Phulari via szetszwo)
HADOOP-5327. Fixed job tracker to remove files from system directory on
ACL check failures and also check ACLs on restart.
(Amar Kamat via yhemanth)
HADOOP-5395. Change the exception message when a job is submitted to an
invalid queue. (Rahul Kumar Singh via yhemanth)
HADOOP-5276. Fixes a problem to do with updating the start time of
a task when the tracker that ran the task is lost. (Amar Kamat via
ddas)
HADOOP-5278. Fixes a problem to do with logging the finish time of
a task during recovery (after a JobTracker restart). (Amar Kamat
via ddas)
HADOOP-5490. Fixes a synchronization problem in the
EagerTaskInitializationListener class. (Jothi Padmanabhan via
ddas)
HADOOP-5493. The shuffle copier threads return the codecs back to
the pool when the shuffle completes. (Jothi Padmanabhan via ddas)
HADOOP-5505. Fix JspHelper initialization in the context of
MiniDFSCluster. (Raghu Angadi)
HADOOP-5414. Fixes IO exception while executing hadoop fs -touchz
fileName by making sure that lease renewal thread exits before dfs