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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-13332) Remove jackson 1.9.13 and switch all jackson code to 2.x code line
Date Sun, 02 Apr 2017 21:32:42 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-13332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15952858#comment-15952858
] 

Sean Busbey commented on HADOOP-13332:
--------------------------------------

bq. By the way wouldn't the shaded jars pull in old YARN classes as well?

The shaded hbase-server jar probably includes some YARN/MR classes since that's where our
mapreduce integration still lives. They should be relocated to a location only used by the
hbase code though, so they ought not conflict with the classes provided by yarn itself.

It would be helpful to the hbase project if you could detail why you need the hbase-server
jar in the first place, presuming it isn't for some kind of mapreduce integration.

bq. Also, HBASE-13517 has a comment which says HBaseTestingUtil cannot be used with shaded
jars, something which we use extensively in our tests.

It's true that HBaseTestingUtil is not currently compatible with the shaded jars. I believe
we have an open jira to create a shaded version of the test jar that does work with them.
It'd be helpful if you could ping it about the impact on YARN's use of HBase. (even better
if you have some cycles to help complete it, natch.)

> Remove jackson 1.9.13 and switch all jackson code to 2.x code line
> ------------------------------------------------------------------
>
>                 Key: HADOOP-13332
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13332
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: build
>    Affects Versions: 2.8.0
>            Reporter: PJ Fanning
>            Assignee: Akira Ajisaka
>         Attachments: HADOOP-13332.00.patch, HADOOP-13332.01.patch, HADOOP-13332.02.patch,
HADOOP-13332.03.patch
>
>
> This jackson 1.9 code line is no longer maintained. Upgrade
> Most changes from jackson 1.9 to 2.x just involve changing the package name.



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