hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12163) Ozone: MiniOzoneCluster uses 400+ threads
Date Thu, 20 Jul 2017 01:39:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16094067#comment-16094067
] 

Weiwei Yang commented on HDFS-12163:
------------------------------------

Very interesting, I observed a number of leaks as well in the past. Most recent one I am working
on is HDFS-12098, that problem was caused by thread leak too. [~szetszwo] are you working
on a fix? If not, I can look into this problem this weekend.

> Ozone: MiniOzoneCluster uses 400+ threads
> -----------------------------------------
>
>                 Key: HDFS-12163
>                 URL: https://issues.apache.org/jira/browse/HDFS-12163
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: ozone, test
>            Reporter: Tsz Wo Nicholas Sze
>         Attachments: TestOzoneThreadCount20170719.patch
>
>
> Checked the number of active threads used in MiniOzoneCluster with various settings:
> - Local handlers
> - Distributed handlers
> - Ratis-Netty
> - Ratis-gRPC
> The results are similar for all the settings.  It uses 400+ threads for an 1-datanode
MiniOzoneCluster.
> Moreover, there is a thread leak -- a number of the threads do not shutdown after the
test is finished.  Therefore, when tests run consecutively, the later tests use more threads.
> Will post the details in comments.



--
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