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apache / carbondata / 465
76%

Build:
DEFAULT BRANCH: master
Ran 21 May 2018 03:38PM UTC
Jobs 1
Files 1011
Run time 50s
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[CARBONDATA-2433] [Lucene GC Issue] Executor OOM because of GC when blocklet pruning is done using Lucene datamap

Problem
Executor OOM because of GC when blocklet pruning is done using Lucene datamap

Analysis
While seraching using lucene it creates a PriorityQueue to hold the documents. As size is not specified by default the PriorityQueue size is
equal to the number of lucene documents. As the docuemnts start getting added to the heap the GC time increases and after some time task fails due
to excessive GC and executor OOM occurs.
Reference blog: http://lucene.472066.n3.nabble.com/Optimization-of-memory-usage-in-PriorityQueue-td590355.html

Fix
Specify the limit for first search and after that use the searchAfter API to search in incremental order with gieven PriorityQueue size.

This closes #2267

23 of 23 new or added lines in 1 file covered. (100.0%)

52132 of 69074 relevant lines covered (75.47%)

1.01 hits per line

Jobs
ID Job ID Ran Files Coverage
1 465.1 21 May 2018 03:38PM UTC 0
75.47
Source Files on build 465
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