exception in UnderReplicatedBlocks:add when ther are more replicas of a block
than required
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Key: HADOOP-1136
URL: https://issues.apache.org/jira/browse/HADOOP-1136
Project: Hadoop
Issue Type: Bug
Reporter: dhruba borthakur
Assigned To: Hairong Kuang
I was running a random writer followed by a sort when I saw this condition:
Exception in thread "[EMAIL PROTECTED]"
java.lang.ArrayIndexOutOfBoundsException: 3
at
org.apache.hadoop.dfs.FSNamesystem$UnderReplicatedBlocks.add(FSNamesystem.java:447)
at
org.apache.hadoop.dfs.FSNamesystem$UnderReplicatedBlocks.add(FSNamesystem.java:464)
at
org.apache.hadoop.dfs.FSNamesystem.processPendingReplications(FSNamesystem.java:1891)
at
org.apache.hadoop.dfs.FSNamesystem$ReplicationMonitor.run(FSNamesystem.java:1795)
at java.lang.Thread.run(Thread.java:619)
processPendingReplications is invoking neededReplications.add(). The add
method then invokes add(block, 3, 4). This add method calls getPriority and
that returns 3. Now, the call to priorityQueues[3].add() throws an
OutOfBoundsException.
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