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  1. HBase
  2. HBASE-13892

Scanner with all results filtered out results in NPE

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Details

    • Bug
    • Status: Closed
    • Critical
    • Resolution: Fixed
    • 1.1.0
    • 0.98.14, 1.0.2, 1.2.0, 1.1.1, 2.0.0
    • Client
    • None
    • Reviewed

    Description

      Saw a failure during some testing with region_mover.rb

      NativeException: java.lang.NullPointerException: null
        __ensure__ at /usr/hdp/current/hbase-master/bin/region_mover.rb:110
  isSuccessfulScan at /usr/hdp/current/hbase-master/bin/region_mover.rb:109
  isSuccessfulScan at /usr/hdp/current/hbase-master/bin/region_mover.rb:104
     unloadRegions at /usr/hdp/current/hbase-master/bin/region_mover.rb:328

      To try to get a real stacktrace, I wrote a simple test. Turns out, it was really simple to just produce the NPE within ClientScanner.

      java.lang.NullPointerException: null
	at org.apache.hadoop.hbase.client.ClientScanner.getResultsToAddToCache(ClientScanner.java:576)
	at org.apache.hadoop.hbase.client.ClientScanner.loadCache(ClientScanner.java:492)
	at org.apache.hadoop.hbase.client.ClientScanner.next(ClientScanner.java:364)

      Patch with fix and test incoming.

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            elserj Josh Elser Assign to me
            elserj Josh Elser
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