[jira] [Assigned] (HBASE-27321) The ReplicationLogCleaner is not thread safe but can be called from different threads at the same time

["Duo Zhang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-27321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Duo Zhang reassigned HBASE-27321:
---------------------------------

    Assignee: Duo Zhang

> The ReplicationLogCleaner is not thread safe but can be called from different threads at the same time
> ------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-27321
>                 URL: https://issues.apache.org/jira/browse/HBASE-27321
>             Project: HBase
>          Issue Type: Bug
>          Components: master, Replication
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Critical
>
> In preClean method we will update the class fields and then use them in the getDeletableFiles method. This implies that we will have only one cleaner run at the same time.
> But actually, in MasterRpcServices.runCleanerChore, we will call execute the HFileCleaner and LogCleaner directly, not in the cleanerChore thread.
> This could cause data loss for replication, which is a very serious problem.



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