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apache / carbondata / 1142
76%

Build:
DEFAULT BRANCH: master
Ran 04 Oct 2018 07:11PM UTC
Jobs 1
Files 1014
Run time 49s
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[CARBONDATA-2991]NegativeArraySizeException during query execution

Issue :- During Query Execution sometime NegativeArraySizeException Exception in Some Tasks . And sometime Executor is lost (JVM crash)

Root Cause :- It is because existing memoryblock is removed while it was in-use. This happened because duplicate taskid generated. Sometime freed same memory addresses are assigned to another task which will initialize memory block to0 and this cause NegativeSizeArrayException whereas sometime freed memory will not be used any task of executor process but running task will try to access it and as that address is not part of process so JVM crash will happen.

Solution :- Change taskID generation to UUID based instead of System.nanoTime()

This closes #2796

11 of 11 new or added lines in 11 files covered. (100.0%)

60644 of 75226 relevant lines covered (80.62%)

1.06 hits per line

Jobs
ID Job ID Ran Files Coverage
1 1142.1 04 Oct 2018 07:11PM UTC 0
80.62
Source Files on build 1142
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