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From Íñigo Goiri (JIRA) <j...@apache.org>
Subject [jira] [Updated] (HDFS-14608) DataNode$DataTransfer should be named
Date Tue, 25 Jun 2019 18:31:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-14608?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Íñigo Goiri updated HDFS-14608:
-------------------------------
    Priority: Minor  (was: Major)

> DataNode$DataTransfer should be named
> -------------------------------------
>
>                 Key: HDFS-14608
>                 URL: https://issues.apache.org/jira/browse/HDFS-14608
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Íñigo Goiri
>            Priority: Minor
>             Fix For: 3.3.0
>
>
> Currently, the {{DataTransfer}} thread has no name and it just outputs the default {{toString()}}.
> This shows in the logs in jstack as something like:
> {code}
> 2019-06-25 11:01:01,211 INFO [org.apache.hadoop.hdfs.server.datanode.DataNode$DataTransfer@609ed67a]
org.apache.hadoop.hdfs.server.datanode.DataNode: DataTransfer, at CO4AEAP0000C1AF:10010: Transmitted
BP-1191059133-10.1.2.3-1458888702348:blk_1113379522_69745835 (numBytes=485214) to 10.1.2.3/10.1.2.3:10010
> {code}
> As this uses the {{Daemon}} class, the name is set based on:
> {code}
>   public Daemon(Runnable runnable) {
>     super(runnable);
>     this.runnable = runnable;
>     this.setName(((Object)runnable).toString());
>   }
> {code}
> We should implement toString to at least have the name of the block being transfferred
or something similar to what DataXceiver does (e.g., HDFS-3375).



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