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Posted to dev@hbase.apache.org by "qiang Liu (Jira)" <ji...@apache.org> on 2019/11/07 11:25:00 UTC

[jira] [Created] (HBASE-23271) HFileReader get split point handle empty HFile better

qiang Liu created HBASE-23271:
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             Summary: HFileReader get split point handle empty HFile better
                 Key: HBASE-23271
                 URL: https://issues.apache.org/jira/browse/HBASE-23271
             Project: HBase
          Issue Type: Improvement
          Components: regionserver
    Affects Versions: 1.1.7, 3.0.0
            Reporter: qiang Liu
            Assignee: qiang Liu


currenttly if we call org.apache.hadoop.hbase.io.hfile.HFileReaderImpl#midKey on an empty HFile, we got an exception like

 java.io.IOException: HFile empty

since the function return an Optional<Cell> , I think it's better return Optional.empty() instead of throw An Exception

when a region with muiltiple column family grow big enough to be splited, if got some empty column family, will got some warn log like this

java.io.IOException: HFile empty at org.apache.hadoop.hbase.io.hfile.HFileBlockIndex$BlockIndexReader.midkey(HFileBlockIndex.java:334)

sinece exception is catched,  split logic will go on and got right result



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