Yahoo! Distribution of Hadoop Change Log
Patches from the following Apache Jira issues have been applied
to this release in the order indicated. This is in addition to
the patches applied from issues referenced in CHANGES.txt.
yahoo-hadoop-0.20.0-3006291003
53. HADOOP:5420 Correct bug in earlier implementation
by Arun C. Murthy
52. HADOOP-5363 Add support for proxying connections to multiple
clusters with different versions to hdfsproxy. Contributed
by Zhiyong Zhang
51. HADOOP-5780. Improve per block message prited by -metaSave
in HDFS. (Raghu Angadi)
yahoo-hadoop-0.20.0-2957040010
50. HADOOP-6227. Fix Configuration to allow final parameters to be set
to null and prevent them from being overridden. Contributed by
Amareshwari Sriramadasu.
yahoo-hadoop-0.20.0-2957040007
49. MAPREDUCE-430 Added patch supplied by Amar Kamat to allow
roll forward on branch to includ externally committed
patch.
yahoo-hadoop-0.20.0-2957040006
48. MAPREDUCE-768. Provide an option to dump jobtracker configuration in
JSON format to standard output. Contributed by V.V.Chaitanya
yahoo-hadoop-0.20.0-2957040004
47. MAPREDUCE-834 Correct an issue created by merging this issue with
patch attached to external Jira.
yahoo-hadoop-0.20.0-2957040003
47. HADOOP-6184 Provide an API to dump Configuration in a JSON format.
Contributed by V.V.Chaitanya Krishna.
46. MAPREDUCE-745 Patch added for this issue to allow branch-0.20 to
merge cleanly.
yahoo-hadoop-0.20.0-2957040000
45. MAPREDUCE:478 Allow map and reduce jvm parameters, environment
variables and ulimit to be set separately.
44. MAPREDUCE:682 Removes reservations on tasktrackers which are blacklisted.
Contributed by Sreekanth Ramakrishnan.
43. HADOOP:5420 Support killing of process groups in LinuxTaskController
binary
42. HADOOP-5488 Removes the pidfile management for the Task JVM from the
framework and instead passes the PID back and forth between the
TaskTracker and the Task processes. Contributed by Ravi Gummadi.
41. MAPREDUCE:467 Provide ability to collect statistics about total tasks and
succeeded tasks in different time windows.
yahoo-hadoop-0.20.0.2949784002:
40. MAPREDUCE-817. Add a cache for retired jobs with minimal job
info and provide a way to access history file url
39. MAPREDUCE-814. Provide a way to configure completed job history
files to be on HDFS.
38. 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. Contributed by Amareshwari Sriramadasu.
yahoo-hadoop-0.20.0.2902658004:
37. MAPREDUCE-809 Fix job-summary logs to correctly record final status of
FAILED and KILLED jobs.
http://issues.apache.org/jira/secure/attachment/12414726/MAPREDUCE-809_0_20090728_yhadoop20.patch
36. MAPREDUCE-740 Log a job-summary at the end of a job, while
allowing it to be configured to use a custom appender if desired.
http://issues.apache.org/jira/secure/attachment/12413941/MAPREDUCE-740_2_20090717_yhadoop20.patch
35. MAPREDUCE-771 Fixes a bug which delays normal jobs in favor of
high-ram jobs.
http://issues.apache.org/jira/secure/attachment/12413990/MAPREDUCE-771-20.patch
34. HADOOP-5420 Support setsid based kill in LinuxTaskController.
http://issues.apache.org/jira/secure/attachment/12414735/5420-ydist.patch.txt
33. MAPREDUCE-733 Fixes a bug that when a task tracker is killed ,
it throws exception. Instead it should catch it and process it and
allow the rest of the flow to go through
http://issues.apache.org/jira/secure/attachment/12413015/MAPREDUCE-733-ydist.patch
32. MAPREDUCE-734 Fixes a bug which prevented hi ram jobs from being
removed from the scheduler queue.
http://issues.apache.org/jira/secure/attachment/12413035/MAPREDUCE-734-20.patch
31. MAPREDUCE-693 Fixes a bug that when a job is submitted and the
JT is restarted (before job files have been written) and the job
is killed after recovery, the conf files fail to be moved to the
"done" subdirectory.
http://issues.apache.org/jira/secure/attachment/12412823/MAPREDUCE-693-v1.2-branch-0.20.patch
30. MAPREDUCE-722 Fixes a bug where more slots are getting reserved
for HiRAM job tasks than required.
http://issues.apache.org/jira/secure/attachment/12412744/MAPREDUCE-722.1.txt
29. MAPREDUCE-683 TestJobTrackerRestart failed because of stale
filemanager cache (which was created once per jvm). This patch makes
sure that the filemanager is inited upon every JobHistory.init()
and hence upon every restart. Note that this wont happen in production
as upon a restart the new jobtracker will start in a new jvm and
hence a new cache will be created.
http://issues.apache.org/jira/secure/attachment/12412743/MAPREDUCE-683-v1.2.1-branch-0.20.patch
28. MAPREDUCE-709 Fixes a bug where node health check script does
not display the correct message on timeout.
http://issues.apache.org/jira/secure/attachment/12412711/mapred-709-ydist.patch
27. MAPREDUCE-708 Fixes a bug where node health check script does
not refresh the "reason for blacklisting".
http://issues.apache.org/jira/secure/attachment/12412706/MAPREDUCE-708-ydist.patch
26. MAPREDUCE-522 Rewrote TestQueueCapacities to make it simpler
and avoid timeout errors.
http://issues.apache.org/jira/secure/attachment/12412472/mapred-522-ydist.patch
25. MAPREDUCE-532 Provided ability in the capacity scheduler to
limit the number of slots that can be concurrently used per queue
at any given time.
http://issues.apache.org/jira/secure/attachment/12412592/MAPREDUCE-532-20.patch
24. MAPREDUCE-211 Provides ability to run a health check script on
the tasktracker nodes and blacklist nodes if they are unhealthy.
Contributed by Sreekanth Ramakrishnan.
http://issues.apache.org/jira/secure/attachment/12412161/mapred-211-internal.patch
23. MAPREDUCE-516 Remove .orig file included by mistake.
http://issues.apache.org/jira/secure/attachment/12412108/HADOOP-5964_2_20090629_yhadoop.patch
22. MAPREDUCE-416 Moves the history file to a "done" folder whenever
a job completes.
http://issues.apache.org/jira/secure/attachment/12411938/MAPREDUCE-416-v1.6-branch-0.20.patch
21. HADOOP-5980 Previously, task spawned off by LinuxTaskController
didn't get LD_LIBRARY_PATH in their environment. The tasks will now
get same LD_LIBRARY_PATH value as when spawned off by
DefaultTaskController.
http://issues.apache.org/jira/secure/attachment/12410825/hadoop-5980-v20.patch
20. HADOOP-5981 This issue completes the feature mentioned in
HADOOP-2838. HADOOP-2838 provided a way to set env variables in
child process. This issue provides a way to inherit tt's env variables
and append or reset it. So now X=$X:y will inherit X (if there) and
append y to it.
http://issues.apache.org/jira/secure/attachment/12410454/hadoop5981-branch-20-example.patch
19. HADOOP-5419 This issue is to provide an improvement on the
existing M/R framework to let users know which queues they have
access to, and for what operations. One use case for this would
that currently there is no easy way to know if the user has access
to submit jobs to a queue, until it fails with an access control
exception.
http://issues.apache.org/jira/secure/attachment/12410824/hadoop-5419-v20.2.patch
18. HADOOP-5420 Support setsid based kill in LinuxTaskController.
http://issues.apache.org/jira/secure/attachment/12414735/5420-ydist.patch.txt
17. HADOOP-5643 Added the functionality to refresh jobtrackers node
list via command line (bin/hadoop mradmin -refreshNodes). The command
should be run as the jobtracker owner (jobtracker process owner)
or from a super group (mapred.permissions.supergroup).
http://issues.apache.org/jira/secure/attachment/12410619/Fixed%2B5643-0.20-final
16. HADOOP-2838 Now the users can set environment variables using
mapred.child.env. They can do the following X=Y : set X to Y X=$X:Y
: Append Y to X (which should be taken from the tasktracker)
http://issues.apache.org/jira/secure/attachment/12409895/HADOOP-2838-v2.2-branch-20-example.patch
15. HADOOP-5818. Revert the renaming from FSNamesystem.checkSuperuserPrivilege
to checkAccess by HADOOP-5643. (Amar Kamat via szetszwo)
https://issues.apache.org/jira/secure/attachment/12409835/5818for0.20.patch
14. HADOOP-5801. Fixes the problem: If the hosts file is changed across restart
then it should be refreshed upon recovery so that the excluded hosts are
lost and the maps are re-executed. (Amar Kamat via ddas)
https://issues.apache.org/jira/secure/attachment/12409834/5801-0.20.patch
11. HADOOP-5643. HADOOP-5643. Adds a way to decommission TaskTrackers
while the JobTracker is running. (Amar Kamat via ddas)
https://issues.apache.org/jira/secure/attachment/12409833/Fixed+5643-0.20
10. HADOOP-5419. Provide a facility to query the Queue ACLs for the
current user. (Rahul Kumar Singh via yhemanth)
http://issues.apache.org/jira/secure/attachment/12409323/hadoop-5419-v20.patch
9. HADOOP-5733. Add map/reduce slot capacity and blacklisted capacity to
JobTracker metrics. (Sreekanth Ramakrishnan via cdouglas)
http://issues.apache.org/jira/secure/attachment/12409322/hadoop-5733-v20.patch
8. HADOOP-5738. Split "waiting_tasks" JobTracker metric into waiting maps and
waiting reduces. (Sreekanth Ramakrishnan via cdouglas)
https://issues.apache.org/jira/secure/attachment/12409321/5738-y20.patch
7. HADOOP-4842. Streaming now allows specifiying a command for the combiner.
(Amareshwari Sriramadasu via ddas)
http://issues.apache.org/jira/secure/attachment/12402355/patch-4842-3.txt
6. HADOOP-4490. Provide ability to run tasks as job owners.
(Sreekanth Ramakrishnan via yhemanth)
http://issues.apache.org/jira/secure/attachment/12409318/hadoop-4490-br20-3.patch
https://issues.apache.org/jira/secure/attachment/12410170/hadoop-4490-br20-3.2.patch
5. HADOOP-5442. Paginate jobhistory display and added some search
capabilities. (Amar Kamat via acmurthy)
http://issues.apache.org/jira/secure/attachment/12402301/HADOOP-5442-v1.12.patch
4. HADOOP-3327. Improves handling of READ_TIMEOUT during map output copying.
(Amareshwari Sriramadasu via ddas)
http://issues.apache.org/jira/secure/attachment/12399449/patch-3327-2.txt
3. HADOOP-5113. Fixed logcondense to remove files for usernames
beginning with characters specified in the -l option.
(Peeyush Bishnoi via yhemanth)
http://issues.apache.org/jira/secure/attachment/12409317/hadoop-5113-0.18.txt
2. HADOOP-2898. Provide an option to specify a port range for
Hadoop services provisioned by HOD.
(Peeyush Bishnoi via yhemanth)
http://issues.apache.org/jira/secure/attachment/12409316/hadoop-2898-0.20.txt
1. HADOOP-4930. Implement a Linux native executable that can be used to
launch tasks as users. (Sreekanth Ramakrishnan via yhemanth)
http://issues.apache.org/jira/secure/attachment/12409402/hadoop-4930v20.patch
