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https://issues.apache.org/jira/browse/HDFS-11948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16093867#comment-16093867
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Tsz Wo Nicholas Sze commented on HDFS-11948:
--------------------------------------------
> Also in the profiler, I see around 2025 threads being launched for this
> single test. Thought you might be interested in that.
[~anu], I just have finished some testing and filed HDFS-12163. It turns out
that an 1-datanode MiniOzoneCluster uses 400+ threads for both Ratis and
non-Ratis settings. Also, there is a thread leak problem -- some threads used
in earlier tests are leaked to later tests. The thread leak explains why there
are around 2025 threads showed in the profiler.
TestRatisManager uses 5 datanodes. It only uses a similar number of threads as
other 5-datanode cases showed in [this
comment|https://issues.apache.org/jira/browse/HDFS-12163?focusedCommentId=16093848&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16093848]
- testTestRatisManagerNetty
| (NETTY,5) | init | 6 |
| (NETTY,5) | MiniOzoneCluster | 598 |
| (NETTY,5) | ready | 598 |
| (NETTY,5) | create RatisCluster | 690 |
| (NETTY,5) | close RatisCluster | 722 |
| (NETTY,5) | update RatisCluster | 807 |
| (NETTY,5) | shutdown | 438 |
| (NETTY,5) | sleep | 143 |
- testTestRatisManagerGrpc
| (GRPC,5) | init | 6 |
| (GRPC,5) | MiniOzoneCluster | 600 |
| (GRPC,5) | ready | 600 |
| (GRPC,5) | create RatisCluster | 621 |
| (GRPC,5) | close RatisCluster | 623 |
| (GRPC,5) | update RatisCluster | 633 |
| (GRPC,5) | shutdown | 257 |
| (GRPC,5) | sleep | 137 |
> Ozone: change TestRatisManager to check cluster with data
> ---------------------------------------------------------
>
> Key: HDFS-11948
> URL: https://issues.apache.org/jira/browse/HDFS-11948
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: ozone
> Reporter: Tsz Wo Nicholas Sze
> Assignee: Tsz Wo Nicholas Sze
> Attachments: HDFS-11948-HDFS-7240.20170614.patch
>
>
> TestRatisManager first creates multiple Ratis clusters. Then it changes the
> membership and closes some clusters. However, it does not test the clusters
> with data.
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