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https://issues.apache.org/jira/browse/HBASE-27936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17734255#comment-17734255
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Duo Zhang commented on HBASE-27936:
-----------------------------------
I think a problem is that, in HBASE_27421, we introduced a new field
bloomFilterMetrics but did not change the implementation of
StoreFileReader.copyFields, so we missed the bloomFilterMetrics when compaction.
And maybe there is something wrong when loading bloomfilter then we will set
bloomfilter to null, this will trigger the NPE above.
Let me provide a PR to fix the problem, so [~heliangjun] you could try this
patch to see if it helps. And I will also try to implement a UT for this
scenario.
Thanks.
> NPE in StoreFileReader.passesGeneralRowPrefixBloomFilter()
> ----------------------------------------------------------
>
> Key: HBASE-27936
> URL: https://issues.apache.org/jira/browse/HBASE-27936
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Reporter: Liangjun He
> Priority: Major
>
> When executing itbll, we encountered the following NPE exception：
> {code:java}
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.regionserver.StoreFileReader.passesGeneralRowPrefixBloomFilter(StoreFileReader.java:352)
> at
> org.apache.hadoop.hbase.regionserver.StoreFileReader.passesBloomFilter(StoreFileReader.java:265)
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.shouldUseScanner(StoreFileScanner.java:483)
> at
> org.apache.hadoop.hbase.regionserver.StoreScanner.selectScannersFrom(StoreScanner.java:467)
> at
> org.apache.hadoop.hbase.regionserver.StoreScanner.<init>(StoreScanner.java:320)
> at
> org.apache.hadoop.hbase.regionserver.StoreScanner.<init>(StoreScanner.java:289)
> at
> org.apache.hadoop.hbase.regionserver.compactions.Compactor.createScanner(Compactor.java:544)
> at
> org.apache.hadoop.hbase.regionserver.compactions.Compactor$1.createScanner(Compactor.java:269)
> at
> org.apache.hadoop.hbase.regionserver.compactions.Compactor.compact(Compactor.java:358)
> at
> org.apache.hadoop.hbase.regionserver.compactions.DefaultCompactor.compact(DefaultCompactor.java:64)
> at
> org.apache.hadoop.hbase.regionserver.DefaultStoreEngine$DefaultCompactionContext.compact(DefaultStoreEngine.java:122)
> at
> org.apache.hadoop.hbase.regionserver.HStore.compact(HStore.java:1176)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.compact(HRegion.java:2407)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplit$CompactionRunner.doCompaction(CompactSplit.java:667)
> at
> org.apache.hadoop.hbase.regionserver.CompactSplit$CompactionRunner.run(CompactSplit.java:716)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:750)
> {code}
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