hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ewan Higgs (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-13777) [PROVIDED Phase 2] Scheduler in the NN for distributing DNA_BACKUP work.
Date Thu, 09 Aug 2018 10:43:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-13777?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16574678#comment-16574678
] 

Ewan Higgs commented on HDFS-13777:
-----------------------------------

003
- Added patch with further test for showing that when a sync is complete, the overreplication
detection kicks in and thins the blocks so we have only the required replicas (i.e. {{[DISK,
DISK, DISK]}} -> {{[DISK, PROVIDED]}}. 
- Add PROVIDED_ONLY storage policy which further demonstrates the above so {{[DISK, DISK,
DISK]}} becomes {{[PROVIDED]}}

> [PROVIDED Phase 2] Scheduler in the NN for distributing DNA_BACKUP work.
> ------------------------------------------------------------------------
>
>                 Key: HDFS-13777
>                 URL: https://issues.apache.org/jira/browse/HDFS-13777
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Ewan Higgs
>            Assignee: Ewan Higgs
>            Priority: Major
>         Attachments: HDFS-13777-HDFS-12090.001.patch, HDFS-13777-HDFS-12090.002.patch,
HDFS-13777-HDFS-12090.003.patch
>
>
> When the SyncService is running, it should periodically take snapshots, make a snapshotdiff,
and then distribute DNA_BACKUP work to the Datanodes (See HDFS-13421). Upon completion of
the work, the NN should update the AliasMap.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org


Mime
View raw message