KYLIN-4168 Add two null judgements before using the object named input.

[seraphlich]

No description provided.

[asf-ci]

Can one of the admins verify this patch?

[asf-ci]

Can one of the admins verify this patch?

[codecov-io]

Codecov Report

Merging #872 into master will decrease coverage by 0.01%.
The diff coverage is 0%.

@@             Coverage Diff              @@
##             master     #872      +/-   ##
============================================
- Coverage     25.47%   25.45%   -0.02%     
+ Complexity     6109     6107       -2     
============================================
  Files          1410     1410              
  Lines         84919    84919              
  Branches      11897    11897              
============================================
- Hits          21633    21620      -13     
- Misses        61204    61219      +15     
+ Partials       2082     2080       -2

Impacted Files	Coverage Δ	Complexity Δ
...ain/java/org/apache/kylin/common/KylinVersion.java	35.06% <0%> (ø)	11 <0> (ø)	⬇️
...he/kylin/dict/lookup/cache/RocksDBLookupTable.java	72.97% <0%> (-5.41%)	6% <0%> (-1%)
...ream/core/storage/columnar/ColumnarStoreCache.java	52.27% <0%> (-3.41%)	8% <0%> (ø)
...he/kylin/job/impl/threadpool/DefaultScheduler.java	74.41% <0%> (-2.33%)	12% <0%> (ø)
...eam/core/storage/columnar/DataSegmentFragment.java	57.37% <0%> (-1.64%)	17% <0%> (-1%)
...rg/apache/kylin/cube/inmemcubing/MemDiskStore.java	69.6% <0%> (-1.52%)	7% <0%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 1e64c23...4d66bd3. Read the comment docs.

[coveralls]

Pull Request Test Coverage Report for Build 5093

• 0 of 2 (0.0%) changed or added relevant lines in 1 file are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.001%) to 27.912%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
core-common/src/main/java/org/apache/kylin/common/KylinVersion.java	0	2	0.0%

Files with Coverage Reduction	New Missed Lines	%
core-cube/src/main/java/org/apache/kylin/cube/inmemcubing/MemDiskStore.java	1	78.12%

Totals
Change from base Build 5075:	-0.001%
Covered Lines:	23703
Relevant Lines:	84919

---

💛 - Coveralls

[nichunen]

LGTM