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Posted to dev@hbase.apache.org by "Michael Stack (Jira)" <ji...@apache.org> on 2020/01/13 18:19:00 UTC

[jira] [Created] (HBASE-23684) NPE HFilesOutputSink

Michael Stack created HBASE-23684:
-------------------------------------

             Summary: NPE HFilesOutputSink
                 Key: HBASE-23684
                 URL: https://issues.apache.org/jira/browse/HBASE-23684
             Project: HBase
          Issue Type: Bug
          Components: wal
    Affects Versions: 2.3.0
            Reporter: Michael Stack


Ran into this after enabling hfile splitter:

{code}
 2020-01-13 17:37:08,204 INFO org.apache.hadoop.hbase.wal.OutputSink: 3 split writer threads finished
 2020-01-13 17:37:08,233 INFO org.apache.hadoop.hbase.wal.WALSplitter: Processed 1007 edits across 0 regions cost 284 ms; edits skipped=76; WAL=hdfs://nameservice1/hbase/genie/WALs/hbasedn101.example.org,16020,1578934806382-splitting/hbasedn101.example.org%2C16020%2C1578934806382.1578937008832, size=128.5 M, length=134708720, corrupted=false, progress         failed=true
 2020-01-13 17:37:08,234 WARN org.apache.hadoop.hbase.regionserver.SplitLogWorker: log splitting of WALs/hbasedn101.example.org,16020,1578934806382-splitting/hbasedn101.example.org%2C16020%2C1578934806382.1578937008832 failed, returning error
 java.io.IOException: java.lang.NullPointerException
         at org.apache.hadoop.hbase.wal.BoundedRecoveredHFilesOutputSink.writeRemainingEntryBuffers(BoundedRecoveredHFilesOutputSink.java:173)
         at org.apache.hadoop.hbase.wal.BoundedRecoveredHFilesOutputSink.close(BoundedRecoveredHFilesOutputSink.java:140)
         at org.apache.hadoop.hbase.wal.WALSplitter.splitLogFile(WALSplitter.java:339)
         at org.apache.hadoop.hbase.wal.WALSplitter.splitLogFile(WALSplitter.java:181)
         at org.apache.hadoop.hbase.regionserver.SplitLogWorker.splitLog(SplitLogWorker.java:105)
         at org.apache.hadoop.hbase.regionserver.SplitLogWorker.lambda$new$0(SplitLogWorker.java:84)
         at org.apache.hadoop.hbase.regionserver.handler.WALSplitterHandler.process(WALSplitterHandler.java:70)
         at org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:104)
         at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
         at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
         at java.base/java.lang.Thread.run(Thread.java:834)
 Caused by: java.lang.NullPointerException
         at org.apache.hadoop.hbase.wal.BoundedRecoveredHFilesOutputSink.configContextForNonMetaWriter(BoundedRecoveredHFilesOutputSink.java:225)
         at org.apache.hadoop.hbase.wal.BoundedRecoveredHFilesOutputSink.createRecoveredHFileWriter(BoundedRecoveredHFilesOutputSink.java:213)
         at org.apache.hadoop.hbase.wal.BoundedRecoveredHFilesOutputSink.append(BoundedRecoveredHFilesOutputSink.java:117)
         at org.apache.hadoop.hbase.wal.BoundedRecoveredHFilesOutputSink.lambda$writeRemainingEntryBuffers$3(BoundedRecoveredHFilesOutputSink.java:155)
         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
         at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
         at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
{code}

It is a bit odd because log says there were zero regions. Not sure what that was about.



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