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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4810) Data lost at cluster startup time
Date Tue, 09 Dec 2008 20:03:44 GMT
Data lost at cluster startup time
---------------------------------

                 Key: HADOOP-4810
                 URL: https://issues.apache.org/jira/browse/HADOOP-4810
             Project: Hadoop Core
          Issue Type: Bug
          Components: dfs
    Affects Versions: 0.18.2
            Reporter: Hairong Kuang
            Assignee: Hairong Kuang
            Priority: Blocker
             Fix For: 0.18.3


hadoop dfs -cat file1 returns
dfs.DFSClient: Could not obtain block blk_XX_0 from any node: java.io.IOException: No live
nodes contain current block

Tracing the history of the block from NN log, we found
 WARN org.apache.hadoop.fs.FSNamesystem: Inconsistent size for block blk_-6160940519231606858_0
reported from A1.A2.A3.A4:50010 current size is 9303872 reported size is 262144
 WARN org.apache.hadoop.fs.FSNamesystem: Deleting block blk_-6160940519231606858_0 from A1.A2.A3.A4:50010
INFO org.apache.hadoop.dfs.StateChange: DIR* NameSystem.invalidateBlock: blk_-6160940519231606858_0
on A1.A2.A3.A4:50010 
WARN org.apache.hadoop.fs.FSNamesystem: Error in deleting bad block blk_-6160940519231606858_0
org.apache.hadoop.dfs.SafeModeException: Cannot invalidate block blk_-6160940519231606858_0.
Name node is in safe mode. 
WARN org.apache.hadoop.fs.FSNamesystem: Inconsistent size for block blk_-6160940519231606858_0
reported from B1.B2.B3.B4:50010 current size is 9303872 reported size is 306688 
WARN org.apache.hadoop.fs.FSNamesystem: Deleting block blk_-6160940519231606858_0 from B1.B2.B3.B4:50010

INFO org.apache.hadoop.dfs.StateChange: DIR* NameSystem.invalidateBlock: blk_-6160940519231606858_0
on B1.B2.B3.B4:50010 
WARN org.apache.hadoop.fs.FSNamesystem: Error in deleting bad block blk_-6160940519231606858_0
org.apache.hadoop.dfs.SafeModeException: Cannot invalidate block blk_-6160940519231606858_0.
Name node is in safe mode. 
INFO org.apache.hadoop.dfs.StateChange: BLOCK* NameSystem.chooseExcessReplicates: (C1.C2.C3.C4:50010,
blk_-6160940519231606858_0) is added to recentInvalidateSets 
INFO org.apache.hadoop.dfs.StateChange: BLOCK* NameSystem.chooseExcessReplicates: (D1.D2.D3.D4:50010,
blk_-6160940519231606858_0) is added to recentInvalidateSets
INFO org.apache.hadoop.dfs.StateChange: BLOCK* ask C1.C2.C3.C4:50010 to delete blk_-6160940519231606858_0
INFO org.apache.hadoop.dfs.StateChange: BLOCK* ask D1.D2.D3.D4:50010 to delete blk_-6160940519231606858_0


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