hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "SammiChen (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11643) Balancer fencing fails when writing erasure coded lock file
Date Sat, 22 Apr 2017 06:36:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11643?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15979794#comment-15979794
] 

SammiChen commented on HDFS-11643:
----------------------------------

Thanks Andrew for the reminder!  TestBalancer issue is fixed. It seems some unit test doesn't
work well when Write2IdFile is enabled. 
{quote}  Not sure if this is related, but running TestBalancer also makes this file in my
source tree, rather than in a target folder:
        hadoop-hdfs-project/hadoop-hdfs/include-hosts-file
{quote}
I not quite understand this comment. 
 

> Balancer fencing fails when writing erasure coded lock file
> -----------------------------------------------------------
>
>                 Key: HDFS-11643
>                 URL: https://issues.apache.org/jira/browse/HDFS-11643
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: balancer & mover, erasure-coding
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Andrew Wang
>            Assignee: SammiChen
>            Priority: Blocker
>              Labels: hdfs-ec-3.0-must-do
>         Attachments: HDFS-11643.001.patch, HDFS-11643.002.patch, HDFS-11643.003.patch,
HDFS-11643.004.patch, HDFS-11643.005.patch, HDFS-11643.006.patch
>
>
> At startup, the balancer writes its hostname to the lock file and calls hflush(). hflush
is not supported for EC files, so this fails when the entire filesystem is erasure coded.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org


Mime
View raw message