[jira] [Commented] (HBASE-9374) Client requires write access to hbase.local.dir unnecessarily

["Jimmy Xiang (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-9374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13753064#comment-13753064 ] 

Jimmy Xiang commented on HBASE-9374:
------------------------------------

That's a good catch. Dynamic class loading should be done in RS side only. Do we have a way to detect it is client side or server side?
                
> Client requires write access to hbase.local.dir unnecessarily
> -------------------------------------------------------------
>
>                 Key: HBASE-9374
>                 URL: https://issues.apache.org/jira/browse/HBASE-9374
>             Project: HBase
>          Issue Type: Bug
>          Components: Client, Protobufs
>    Affects Versions: 0.95.2
>            Reporter: Nick Dimiduk
>
> Per this [thread|http://mail-archives.apache.org/mod_mbox/hbase-dev/201308.mbox/%3cCANZa=GuLO0jTLs1fF+5_NRDczO+M=SSqjeAGVEeiCY8injbP8w@mail.gmail.com%3e] from the dev list.
> {quote}
> It appears that as of HBASE-1936, we now require that client applications have write access to hbase.local.dir. This is because ProtobufUtil instantiates a DyanamicClassLoader as part of static initialization. This classloader is used for instantiating Comparators, Filters, and Exceptions.
> {quote}
> Client applications do not need to use DynamicClassLoader and so should not require this write access.

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