[jira] [Commented] (HBASE-23363) MobCompactionChore takes a long time to complete once job

["Vladimir Rodionov (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-23363?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16987548#comment-16987548 ] 

Vladimir Rodionov commented on HBASE-23363:
-------------------------------------------

Please, refer to HBASE-22749, for the new distributed MOB compaction implementation.  This is going to be next MOB soon. I do not think, anybody will be working on optimizing old MOB compaction.

> MobCompactionChore takes a long time to complete once job
> ---------------------------------------------------------
>
>                 Key: HBASE-23363
>                 URL: https://issues.apache.org/jira/browse/HBASE-23363
>             Project: HBase
>          Issue Type: Bug
>          Components: mob
>    Affects Versions: 2.1.1, 2.2.2
>            Reporter: Bo Cui
>            Priority: Major
>         Attachments: image-2019-12-04-11-01-20-352.png
>
>
> mob table compcation is done in master
>  poolSize of hbase choreService is 1
>  if hbase has 1000 mob table,MobCompactionChore takes a long time to complete once job, other chore need to wait....
> !image-2019-12-04-11-01-20-352.png!
> {code:java}
> MobCompactionChore#chore() {
>    ...
>    for (TableDescriptor htd : map.values()) {
>       ...
>       for (ColumnFamilyDescriptor hcd : htd.getColumnFamilies()) {
>          if hcd is mob{
>             MobUtils.doMobCompaction;
>          }
>       }
>       ...
>    }
>    ...
> }
> {code}



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