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https://issues.apache.org/jira/browse/HDFS-14421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuanbo Liu updated HDFS-14421:
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Attachment: 326942161.log
> HDFS block two replicas exist in one DataNode
> ---------------------------------------------
>
> Key: HDFS-14421
> URL: https://issues.apache.org/jira/browse/HDFS-14421
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Yuanbo Liu
> Priority: Major
> Attachments: 326942161.log
>
>
> We're using Hadoop-2.7.0.
> There is a file in the cluster and it's replication factor is 2. Those two
> replicas exist in one Datande. the fsck info is here:
> {color:#707070}BP-499819267-xx.xxx.131.201-1452072365222:blk_1400651575_326942161
> len=484045 repl=2
> [DatanodeInfoWithStorage[xx.xxx.80.205:50010,DS-d321be27-cbd4-4edd-81ad-29b3d021ee82,DISK],
>
> DatanodeInfoWithStorage[xx.xx.80.205:50010,DS-d321be27-cbd4-4edd-81ad-29b3d021ee82,DISK]].{color}
> and this is the exception from xx.xx.80.205
> {color:#707070}org.apache.hadoop.hdfs.server.datanode.ReplicaNotFoundException:
> Replica not found for
> BP-499819267-xx.xxx.131.201-1452072365222:blk_1400651575_326942161{color}
> It's confusing that why NameNode doesn't update block map after exception.
> What's the reason of two replicas existing in one Datande?
> Hope to get your comments. Thanks in advance.
>
>
>
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