fix KYLIN-4184 Real time OLAP query gets wrong result

[ikids-star]

issue link : https://issues.apache.org/jira/browse/KYLIN-4184

[asf-ci]

Can one of the admins verify this patch?

[codecov-io]

Codecov Report

Merging #867 into master will decrease coverage by <.01%.
The diff coverage is 25%.

@@             Coverage Diff              @@
##             master     #867      +/-   ##
============================================
- Coverage     25.46%   25.45%   -0.01%     
  Complexity     6107     6107              
============================================
  Files          1410     1410              
  Lines         84919    84929      +10     
  Branches      11897    11902       +5     
============================================
- Hits          21622    21621       -1     
- Misses        61218    61227       +9     
- Partials       2079     2081       +2

Impacted Files	Coverage Δ	Complexity Δ
.../kylin/stream/core/storage/columnar/RawRecord.java	46.87% <0%> (-15.63%)	7 <0> (ø)
...am/core/storage/columnar/FragmentSearchResult.java	68.15% <100%> (+0.31%)	11 <0> (ø)	⬇️
...mnar/compress/RunLengthCompressedColumnReader.java	98.41% <100%> (ø)	10 <2> (ø)	⬇️
.../apache/kylin/cube/cuboid/TreeCuboidScheduler.java	63.84% <0%> (-2.31%)	0% <0%> (ø)
...rg/apache/kylin/cube/inmemcubing/MemDiskStore.java	69.6% <0%> (-0.61%)	7% <0%> (ø)
...he/kylin/job/impl/threadpool/DefaultScheduler.java	76.74% <0%> (+2.32%)	12% <0%> (ø)	⬇️

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[coveralls]

Pull Request Test Coverage Report for Build 5078

• 4 of 16 (25.0%) changed or added relevant lines in 3 files are covered.
• 5 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.002%) to 27.912%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
stream-core/src/main/java/org/apache/kylin/stream/core/storage/columnar/RawRecord.java	0	12	0.0%

Files with Coverage Reduction	New Missed Lines	%
core-cube/src/main/java/org/apache/kylin/cube/inmemcubing/MemDiskStore.java	1	78.12%
core-cube/src/main/java/org/apache/kylin/cube/cuboid/TreeCuboidScheduler.java	2	68.46%
stream-core/src/main/java/org/apache/kylin/stream/core/storage/columnar/RawRecord.java	2	46.88%

Totals
Change from base Build 5075:	-0.002%
Covered Lines:	23705
Relevant Lines:	84929

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💛 - Coveralls

[nichunen]

LGTM