hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Akira Ajisaka (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12140) Remove BPOfferService lock contention to get block pool id
Date Tue, 25 Jul 2017 04:43:02 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12140?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Akira Ajisaka updated HDFS-12140:
---------------------------------
    Fix Version/s:     (was: 2.8.3)
                   2.8.2

> Remove BPOfferService lock contention to get block pool id
> ----------------------------------------------------------
>
>                 Key: HDFS-12140
>                 URL: https://issues.apache.org/jira/browse/HDFS-12140
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode
>    Affects Versions: 2.8.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>             Fix For: 2.9.0, 3.0.0-beta1, 2.8.2
>
>         Attachments: HDFS-12140.branch-2.8.patch, HDFS-12140.trunk.patch
>
>
> The block pool id is protected by a lock in {{BPOfferService}}.  This creates excessive
contention especially for xceivers threads attempting to queue IBRs and heartbeat processing.
 When the latter is delayed due to excessive FSDataset lock contention, it causes pipelines
to collapse.
> Accessing the block pool id should be lockless after registration.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

---------------------------------------------------------------------
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