hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Wei Zhou (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-9608) Disk IO imbalance in HDFS with heterogeneous storages
Date Thu, 07 Jan 2016 06:55:39 GMT

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

Wei Zhou updated HDFS-9608:
---------------------------
    Attachment: HDFS-9608.02.patch

Thanks Kai for the helpful suggestions! Modifications made to the previous patch accordingly.
Sorry for Item 2, i just forgot to delete it. 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, HDFS-9608.02.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.
> Besides, it uses a shared lock for synchronization which limits the concurrency of volume
choosing process. Volume choosing threads that operating on different storage types should
be able to run concurrently. 



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message