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Posted to common-issues@hadoop.apache.org by "Allen Wittenauer (JIRA)" <ji...@apache.org> on 2016/05/25 19:31:13 UTC
[jira] [Commented] (HADOOP-11127) Improve versioning and
compatibility support in native library for downstream hadoop-common users.
[ https://issues.apache.org/jira/browse/HADOOP-11127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15300702#comment-15300702 ]
Allen Wittenauer commented on HADOOP-11127:
-------------------------------------------
Ping.
It would be good to get this into 3.x.
> Improve versioning and compatibility support in native library for downstream hadoop-common users.
> --------------------------------------------------------------------------------------------------
>
> Key: HADOOP-11127
> URL: https://issues.apache.org/jira/browse/HADOOP-11127
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: native
> Reporter: Chris Nauroth
> Assignee: Alan Burlison
> Attachments: HADOOP-11064.003.patch, proposal.01.txt
>
>
> There is no compatibility policy enforced on the JNI function signatures implemented in the native library. This library typically is deployed to all nodes in a cluster, built from a specific source code version. However, downstream applications that want to run in that cluster might choose to bundle a hadoop-common jar at a different version. Since there is no compatibility policy, this can cause link errors at runtime when the native function signatures expected by hadoop-common.jar do not exist in libhadoop.so/hadoop.dll.
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