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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5412) TestInjectionForSimulatedStorage oaccasionally fails on timeout
Date Thu, 05 Mar 2009 21:59:56 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5412?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12679389#action_12679389
] 

Hairong Kuang commented on HADOOP-5412:
---------------------------------------

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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