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From "Tsz Wo Nicholas Sze (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12163) Ozone: MiniOzoneCluster uses 400+ threads
Date Wed, 19 Jul 2017 21:37:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsz Wo Nicholas Sze updated HDFS-12163:
---------------------------------------
    Description: 
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.

  was:
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 a 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.


> 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
>
> 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.



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