[jira] [Commented] (HBASE-14247) Separate the old WALs into different regionserver directories

["Vladimir Rodionov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-14247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14702555#comment-14702555 ] 

Vladimir Rodionov commented on HBASE-14247:
-------------------------------------------

{quote}
Suggestions are welcomed
{quote}

Increase *dfs.block.size* :)  Having separate dir for every server is a good idea.  

> Separate the old WALs into different regionserver directories
> -------------------------------------------------------------
>
>                 Key: HBASE-14247
>                 URL: https://issues.apache.org/jira/browse/HBASE-14247
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Liu Shaohui
>            Assignee: Liu Shaohui
>            Priority: Minor
>
> Currently all old WALs of regionservers are achieved into the single directory of oldWALs. In big clusters, because of long TTL of WAL or disabled replications, the number of files under oldWALs may reach the max-directory-items limit of HDFS, which will make the hbase cluster crashed.
> {quote}
> Caused by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hdfs.protocol.FSLimitException$MaxDirectoryItemsExceededException): The directory item limit of /hbase/lgprc-xiaomi/.oldlogs is exceeded: limit=1048576 items=1048576
> {quote}
> A simple solution is to separate the old WALs into different  directories according to the server name of the WAL.
> Suggestions are welcomed~ Thanks



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