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Posted to hdfs-issues@hadoop.apache.org by "Wei Zhou (JIRA)" <ji...@apache.org> on 2016/01/04 03:20:39 UTC

[jira] [Updated] (HDFS-9608) Disk IO imbalance in HDFS with heterogeneous storages

     [ https://issues.apache.org/jira/browse/HDFS-9608?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Wei Zhou updated HDFS-9608:
---------------------------
    Attachment: HDFS-9608.01.patch

This patch insure choosing volumes in RR mode for each storage type. Besides, it uses storage-type-level lock to allow concurrent choosing of different storage types. Thanks!

> Disk IO imbalance in HDFS with heterogeneous storages
> -----------------------------------------------------
>
>                 Key: HDFS-9608
>                 URL: https://issues.apache.org/jira/browse/HDFS-9608
>             Project: Hadoop HDFS
>          Issue Type: Bug
>            Reporter: Wei Zhou
>            Assignee: Wei Zhou
>         Attachments: HDFS-9608.01.patch
>
>
> Currently RoundRobinVolumeChoosingPolicy use a shared index to choose volumes in HDFS with heterogeneous storages, this leads to non-RR choosing mode for certain type of storage.



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