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Ran 04 Oct 2018 07:11PM UTC

Files 1014

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Committed 04 Oct 2018 07:11PM UTC coverage: 80.616% (+1.7%) from 78.891%

Job # 1142.1

Build Type

push

jenkins

Committed by ravipesala

Commit Message

[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

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