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From "Jerry He (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14548) Expand how table coprocessor jar and dependency path can be specified
Date Mon, 04 Jul 2016 19:01:10 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15361701#comment-15361701
] 

Jerry He commented on HBASE-14548:
----------------------------------

Patch looks good, [~water]  Thanks for working on it.

bq. +    Path pathPattern1 = fs.isDirectory(pathPattern) ?

The fs.isDirectory works fine on a wildcard path?

The tests are all on local file system. 
You can enhance them to have the test jars on hdfs. You can enhance ClassLoaderTestHelper.buildJar()
to the jar on a working dir on hdfs minicluster.
This  can be done in a separate JIRA if you like.

> Expand how table coprocessor jar and dependency path can be specified
> ---------------------------------------------------------------------
>
>                 Key: HBASE-14548
>                 URL: https://issues.apache.org/jira/browse/HBASE-14548
>             Project: HBase
>          Issue Type: Improvement
>          Components: Coprocessors
>    Affects Versions: 1.2.0
>            Reporter: Jerry He
>            Assignee: li xiang
>             Fix For: 1.2.0
>
>         Attachments: HBASE-14548-1.2.0-v0.patch, HBASE-14548-1.2.0-v1.patch, HBASE-14548-master-v1.patch
>
>
> Currently you can specify the location of the coprocessor jar in the table coprocessor
attribute.
> The problem is that it only allows you to specify one jar that implements the coprocessor.
 You will need to either bundle all the dependencies into this jar, or you will need to copy
the dependencies into HBase lib dir.
> The first option may not be ideal sometimes.  The second choice can be troublesome too,
particularly when the hbase region sever node and dirs are dynamically added/created.
> There are a couple things we can expand here.  We can allow the coprocessor attribute
to specify a directory location, probably on hdfs.
> We may even allow some wildcard in there.



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