[jira] [Commented] (FLINK-10992) Jepsen: Do not use /tmp as HDFS Data Directory

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-10992?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16696290#comment-16696290 ] 

ASF GitHub Bot commented on FLINK-10992:
----------------------------------------

GJL opened a new pull request #7164: [FLINK-10992][tests] Revise Hadoop configuration.
URL: https://github.com/apache/flink/pull/7164
 
 
   ## What is the purpose of the change
   
   Revise Hadoop configuration to improve HDFS stability in tests.
   
   ## Brief change log
     - *Do not use /tmp directory to place log files or the HDFS data directory.*
     - *Reconfigure dfs.replication to 1 because file availability is irrelevant in tests.*
     - *Increase heap size of HDFS DataNodes and NameNode.*
     - *Change find-files! function to not fail if directory does not exist.*
   
   
   ## Verifying this change
   
   This change is already covered by existing tests, such as *Jepsen tests*.
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): (yes / **no**)
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**)
     - The serializers: (yes / **no** / don't know)
     - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know)
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know)
     - The S3 file system connector: (yes / **no** / don't know)
   
   ## Documentation
   
     - Does this pull request introduce a new feature? (yes / **no**)
     - If yes, how is the feature documented? (**not applicable** / docs / JavaDocs / not documented)
   

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> Jepsen: Do not use /tmp as HDFS Data Directory
> ----------------------------------------------
>
>                 Key: FLINK-10992
>                 URL: https://issues.apache.org/jira/browse/FLINK-10992
>             Project: Flink
>          Issue Type: Bug
>          Components: Tests
>    Affects Versions: 1.8.0
>            Reporter: Gary Yao
>            Assignee: Gary Yao
>            Priority: Major
>              Labels: pull-request-available
>
> {{dfs.name.dir}} and {{dfs.data.dir}} should not be located in {{/tmp}}. The directories might get deleted unintentionally, which can cause test failures.



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