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  1. HBase
  2. HBASE-3950

IndexOutOfBoundsException reading results


    • Type: Bug
    • Status: Resolved
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:


      I discovered this while testing out HBASE-3789, I can recreate this bug without my patch.

      When running TestFromClient, I get failures in testListTables and testJiraTest867. The assertion error is on a number mismatch, but when you look at the log you see:

      2011-06-02 16:51:24,602 WARN [IPC Client (47) connection to hbasedev/ from an unknown user] ipc.HBaseClient$Connection(489): Unexpected exception receiving call responses
      at java.io.BufferedInputStream.read(BufferedInputStream.java:310)
      at java.io.DataInputStream.readFully(DataInputStream.java:178)
      at org.apache.hadoop.hbase.client.Result.readArray(Result.java:652)
      at org.apache.hadoop.hbase.io.HbaseObjectWritable.readObject(HbaseObjectWritable.java:540)
      at org.apache.hadoop.hbase.io.HbaseObjectWritable.readFields(HbaseObjectWritable.java:288)
      at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.receiveResponse(HBaseClient.java:563)
      at org.apache.hadoop.hbase.ipc.HBaseClient$Connection.run(HBaseClient.java:486)
      2011-06-02 16:51:24,603 WARN [IPC Reader 2 on port 56606] ipc.HBaseServer$Listener(600): IPC Server listener on 56606: readAndProcess threw exception java.io.IOException: Connection reset by peer. Count of bytes read: 0
      java.io.IOException: Connection reset by peer
      at sun.nio.ch.FileDispatcher.read0(Native Method)
      at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:21)
      at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:233)
      at sun.nio.ch.IOUtil.read(IOUtil.java:206)
      at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:236)
      at org.apache.hadoop.hbase.ipc.HBaseServer.channelRead(HBaseServer.java:1518)
      at org.apache.hadoop.hbase.ipc.HBaseServer$Connection.readAndProcess(HBaseServer.java:1001)
      at org.apache.hadoop.hbase.ipc.HBaseServer$Listener.doRead(HBaseServer.java:596)
      at org.apache.hadoop.hbase.ipc.HBaseServer$Listener$Reader.run(HBaseServer.java:390)
      at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
      at java.lang.Thread.run(Thread.java:619)

      It's not clear to me how I can debug this, but adding some debug inside Result.readArray shows me that the last ints being read are out of whack:

      numKeys 3
      0 keyLen 687
      0 offset 55551
      1 keyLen 127
      1 offset 56242
      2 keyLen 130
      2 offset 56373
      numKeys 3
      0 keyLen 666
      0 offset 56511
      1 keyLen 120
      1 offset 57181
      2 keyLen 123
      2 offset 57305
      numKeys 1768842863
      0 keyLen 1919248233
      0 offset 57436

      Here I'm printing the tail of the reading of an array of Results where each has 3 KVs. As you can see, the last one has a pretty big number of keys and then the keyLen is also completely off. Looking at the server side when writing, I see that the real number of that last keyLen should be 448.




            • Assignee:
              jdcryans Jean-Daniel Cryans
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              • Created: