Fix crash in mondrian.rolap.cache.SegmentCacheIndexImpl.findRollupCandidatesAmong #1038
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❌ Build failed in 1h 45m 29sBuild command: mvn clean verify -B -e -Daudit -amd -DrunITs -pl mondrian❗ No tests found!Errors:Filtered log (click to expand)
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PartiallyOrderedSet.getAncestors() would sometimes return a list containing null item, causing an exception:
java.lang.NullPointerException
at mondrian.rolap.cache.SegmentCacheIndexImpl.findRollupCandidatesAmong(SegmentCacheIndexImpl.java:814)
Problem pops up randomly when stress testing mondrian with multiple parallel requests.
Problem is also reported by another person here:
https://forums.pentaho.com/archive/index.php/t-208717.html
This patch solved the problem for me.