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https://issues.apache.org/jira/browse/HADOOP-5412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12679389#action_12679389
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Hairong Kuang commented on HADOOP-5412:
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Below are the related logs that explain what happened to this block:
# INFO dfs.StateChange (FSNamesystem.java:addStoredBlock(2839)) - BLOCK*
NameSystem.addStoredBlock: blockMap updated: 127.0.0.1:48092 is added to
blk_6302924909504458109_1001 size 32
# INFO dfs.StateChange (FSNamesystem.java:computeReplicationWork(2403)) -
BLOCK* ask 127.0.0.1:48092 to replicate blk_6302924909504458109_1001 to
datanode(s) 127.0.0.1:48095
# INFO dfs.StateChange (FSNamesystem.java:computeReplicationWork(2403))-
BLOCK* ask 127.0.0.1:48092 to replicate blk_6302924909504458109_1001 to
datanode(s) 127.0.0.1:48095
# INFO dfs.DataNode (DataNode.java:writeBlock(1205)) - Receiving block
blk_6302924909504458109_1001 src: /127.0.0.1:48124 dest: /127.0.0.1:48095
# INFO dfs.DataNode (DataNode.java:writeBlock(1205)) - Receiving block
blk_6302924909504458109_1001 src: /127.0.0.1:48125 dest: /127.0.0.1:48095
# INFO dfs.DataNode (DataNode.java:writeBlock(1340)) - Received block
blk_6302924909504458109_1001 src: /127.0.0.1:48125 dest: /127.0.0.1:48095 of
size 32
# WARN dfs.DataNode (DataNode.java:receiveBlock(2804)) - Exception in
receiveBlock for block blk_6302924909504458109_1001 java.io.IOException:
Finalizing a block that has already been finalized6302924909504458109
# INFO dfs.StateChange (FSNamesystem.java:addStoredBlock(2839)) - BLOCK*
NameSystem.addStoredBlock: blockMap updated: 127.0.0.1:48095 is added to
blk_6302924909504458109_1001 size 32
# INFO dfs.StateChange (FSNamesystem.java:computeReplicationWork(2403)) -
BLOCK* ask 127.0.0.1:48095 to replicate blk_6302924909504458109_1001 to
datanode(s) 127.0.0.1:48101 127.0.0.1:48113
# INFO dfs.DataNode (DataNode.java:transferBlocks(908)) - Can't send invalid
block blk_6302924909504458109_1001
> TestInjectionForSimulatedStorage oaccasionally fails on timeout
> ---------------------------------------------------------------
>
> Key: HADOOP-5412
> URL: https://issues.apache.org/jira/browse/HADOOP-5412
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.18.3
> Reporter: Hairong Kuang
> Assignee: Hairong Kuang
> Fix For: 0.18.4
>
>
> Occasionally TestInjectionForSimulatedStorage falls into an infinite loop,
> waiting for a block to reach its replication factor. The log repeatedly
> prints the following message:
> dfs.TestInjectionForSimulatedStorage
> (TestInjectionForSimulatedStorage.java:waitForBlockReplication(89)) - Not
> enough replicas for 2th block blk_6302924909504458109_1001 yet. Expecting 4,
> got 2.
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