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Posted to hdfs-issues@hadoop.apache.org by "Zhe Zhang (JIRA)" <ji...@apache.org> on 2014/10/03 23:09:34 UTC

[jira] [Updated] (HDFS-7165) Separate block metrics for files with replication count 1

     [ https://issues.apache.org/jira/browse/HDFS-7165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Zhe Zhang updated HDFS-7165:
----------------------------
     Target Version/s:   (was: 2.6.0)
    Affects Version/s:     (was: 2.5.1)
               Status: Patch Available  (was: Open)

> Separate block metrics for files with replication count 1
> ---------------------------------------------------------
>
>                 Key: HDFS-7165
>                 URL: https://issues.apache.org/jira/browse/HDFS-7165
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Andrew Wang
>            Assignee: Zhe Zhang
>         Attachments: HDFS-7165-20141003-v1.patch
>
>
> We see a lot of escalations because someone has written teragen output with a replication factor of 1, a DN goes down, and a bunch of missing blocks show up. These are normally false positives, since teragen output is disposable, and generally speaking, users should understand this is true for all repl=1 files.
> It'd be nice to be able to separate out these repl=1 missing blocks from missing blocks with higher replication factors..



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