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Posted to hdfs-issues@hadoop.apache.org by "Xiaoqiao He (Jira)" <ji...@apache.org> on 2023/05/09 02:47:00 UTC
[jira] [Commented] (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:comment-tabpanel&focusedCommentId=17720752#comment-17720752 ]
Xiaoqiao He commented on HDFS-17003:
------------------------------------
[~zhanghaobo] Thanks for your report. Any more information? The current description does not embody any data loss result? Thanks.
> 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
> Priority: Critical
>
> 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 14:39:42,241 INFO org.apache.hadoop.hdfs.StateChange: *DIR* reportBadBlocks for block: BP-932824627-xxxx-1680179358678:blk_-9223372036846808880_1669008 on datanode: datanode1:50010 {code}
> datanode1 log:
> {code:java}
> 2023-05-08 14:39:42,183 WARN org.apache.hadoop.hdfs.server.datanode.VolumeScanner: Reporting bad BP-932824627-xxxx-1680179358678:blk_-9223372036846808880_1669008
> on /data1/hadoop/hdfs/datanode
> 2023-05-08 14:39:47,338 INFO org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl: Failed to delete replica blk_-9223372036846808879_1669008: ReplicaInfo
> not found. {code}
>
> This phenomenon can be reproduced.
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