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Posted to hdfs-issues@hadoop.apache.org by "farmmamba (Jira)" <ji...@apache.org> on 2023/05/25 08:48:00 UTC
[jira] [Assigned] (HDFS-17003) Erasure coding: invalidate wrong block after reporting bad blocks from datanode
[ https://issues.apache.org/jira/browse/HDFS-17003?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
farmmamba reassigned HDFS-17003:
--------------------------------
Assignee: farmmamba
> Erasure coding: invalidate wrong block after reporting bad blocks from datanode
> -------------------------------------------------------------------------------
>
> Key: HDFS-17003
> URL: https://issues.apache.org/jira/browse/HDFS-17003
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: farmmamba
> Assignee: farmmamba
> Priority: Critical
> Labels: pull-request-available
>
> After receiving reportBadBlocks RPC from datanode, NameNode compute wrong block to invalidate. It is a dangerous behaviour and may cause data loss. Some logs in our production as below:
>
> NameNode log:
> {code:java}
> 2023-05-08 21:23:49,112 INFO org.apache.hadoop.hdfs.StateChange: *DIR* reportBadBlocks for block: BP-932824627-xxxx-1680179358678:blk_-9223372036848404320_1471186 on datanode: datanode1:50010
> 2023-05-08 21:23:49,183 INFO org.apache.hadoop.hdfs.StateChange: *DIR* reportBadBlocks for block: BP-932824627-xxxx-1680179358678:blk_-9223372036848404319_1471186 on datanode: datanode2:50010{code}
> datanode1 log:
> {code:java}
> 2023-05-08 21:23:49,088 WARN org.apache.hadoop.hdfs.server.datanode.VolumeScanner: Reporting bad BP-932824627-xxxx-1680179358678:blk_-9223372036848404320_1471186 on /data7/hadoop/hdfs/datanode
> 2023-05-08 21:24:00,509 INFO org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl: Failed to delete replica blk_-9223372036848404319_1471186: ReplicaInfo not found.{code}
>
> This phenomenon can be reproduced.
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