minor, fix sonar reported bugs

[shaofengshi]

Proposed changes

Another batch of fix for sonar reported code bugs

Types of changes

What types of changes does your code introduce to Kylin?
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of them, don't hesitate to ask. We're here to help! This is simply a reminder of what we are going to look for before merging your code.

• I have create an issue on Kylin's jira, and have described the bug/feature there in detail
• Commit messages in my PR start with the related jira ID, like "KYLIN-0000 Make Kylin project open-source"
• Compiling and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• If this change need a document change, I will prepare another pr against the document branch
• Any dependent changes have been merged

Further comments

If this is a relatively large or complex change, kick off the discussion at user@kylin or dev@kylin by explaining why you chose the solution you did and what alternatives you considered, etc...

[codecov-commenter]

Codecov Report

Merging #1368 into master will increase coverage by 0.01%.
The diff coverage is 17.46%.

@@             Coverage Diff              @@
##             master    #1368      +/-   ##
============================================
+ Coverage     25.46%   25.47%   +0.01%     
- Complexity     6732     6759      +27     
============================================
  Files          1505     1506       +1     
  Lines         93319    93650     +331     
  Branches      13085    13121      +36     
============================================
+ Hits          23764    23859      +95     
- Misses        67216    67413     +197     
- Partials       2339     2378      +39     

Impacted Files	Coverage Δ	Complexity Δ
.../java/org/apache/kylin/common/KylinConfigBase.java	12.56% <0.00%> (-0.13%)	51.00 <0.00> (ø)
...rg/apache/kylin/common/kafka/KafkaMsgProducer.java	0.00% <0.00%> (ø)	0.00 <0.00> (?)
.../org/apache/kylin/common/livy/LivyRestBuilder.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...org/apache/kylin/common/livy/LivyRestExecutor.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...ylin/common/metrics/perflog/PerfLoggerFactory.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...he/kylin/common/persistence/JDBCResourceStore.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
...lin/common/persistence/ResourceParallelCopier.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
.../apache/kylin/common/persistence/ResourceTool.java	21.22% <0.00%> (ø)	14.00 <0.00> (ø)
...org/apache/kylin/common/restclient/RestClient.java	17.79% <0.00%> (+2.54%)	8.00 <0.00> (+2.00)
.../main/java/org/apache/kylin/common/util/Array.java	0.00% <0.00%> (ø)	0.00 <0.00> (ø)
... and 125 more

---

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[coveralls]

Pull Request Test Coverage Report for Build 6273

• 38 of 119 (31.93%) changed or added relevant lines in 24 files are covered.
• 7 unchanged lines in 4 files lost coverage.
• Overall coverage increased (+0.005%) to 28.034%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
engine-mr/src/main/java/org/apache/kylin/engine/mr/streaming/RowRecordReader.java	12	13	92.31%
stream-core/src/main/java/org/apache/kylin/stream/core/storage/columnar/FSInputGeneralColumnDataReader.java	0	1	0.0%
stream-core/src/main/java/org/apache/kylin/stream/core/storage/columnar/FragmentCuboidReader.java	2	3	66.67%
stream-core/src/main/java/org/apache/kylin/stream/core/storage/columnar/SegmentMemoryStore.java	6	7	85.71%
stream-core/src/main/java/org/apache/kylin/stream/core/storage/columnar/compress/FSInputRLECompressedColumnReader.java	3	4	75.0%
stream-core/src/main/java/org/apache/kylin/stream/core/storage/columnar/compress/LZ4CompressedColumnReader.java	1	2	50.0%
stream-core/src/main/java/org/apache/kylin/stream/core/storage/columnar/compress/NoCompressedColumnReader.java	1	2	50.0%
stream-core/src/main/java/org/apache/kylin/stream/core/storage/columnar/compress/RunLengthCompressedColumnReader.java	1	2	50.0%
tool/src/main/java/org/apache/kylin/tool/query/ProbabilityGenerator.java	1	2	50.0%
core-cube/src/main/java/org/apache/kylin/gridtable/GTTwoLayerAggregateScanner.java	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
core-cube/src/main/java/org/apache/kylin/cube/inmemcubing/InMemCubeBuilder.java	1	0%
core-cube/src/main/java/org/apache/kylin/gridtable/GTTwoLayerAggregateScanner.java	1	0%
tool/src/main/java/org/apache/kylin/tool/query/ProbabilityGenerator.java	1	81.58%
core-cube/src/main/java/org/apache/kylin/gridtable/GTAggregateTransformScanner.java	4	0%

Totals
Change from base Build 6269:	0.005%
Covered Lines:	26254
Relevant Lines:	93651

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💛 - Coveralls

[hit-lacus]

LGTM