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From "Fabian Hueske (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (FLINK-6247) Build a jar-with-dependencies for flink-table and put it into ./opt
Date Thu, 27 Apr 2017 16:01:05 GMT

     [ https://issues.apache.org/jira/browse/FLINK-6247?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Fabian Hueske closed FLINK-6247.
--------------------------------
       Resolution: Fixed
    Fix Version/s: 1.3.0

Fixed for 1.3 with 69905e19c636a05992443a647ba4142af5a40a01

> Build a jar-with-dependencies for flink-table and put it into ./opt
> -------------------------------------------------------------------
>
>                 Key: FLINK-6247
>                 URL: https://issues.apache.org/jira/browse/FLINK-6247
>             Project: Flink
>          Issue Type: Improvement
>          Components: Build System, Table API & SQL
>    Affects Versions: 1.3.0
>            Reporter: Fabian Hueske
>            Assignee: sunjincheng
>             Fix For: 1.3.0
>
>
> Due to a problem with Calcite and the unloading of classes, user-code classloaders that
include Calcite cannot be garbage collected. This is a problem for long-running clusters that
execute multiple Table API / SQL programs with fat JARs that include the flink-table dependency.
Each executed program comes with an own user-code classloader that cannot be cleaned up later.
> As a workaround, we recommend to copy the flink-table dependency into the ./lib folder.
However, we do not have a jar file with all required transitive dependencies (Calcite, Janino,
etc). Hence, users would need to build this jar file themselves or copy all jars into ./lib.
> This issue is about creating a jar-with-dependencies and adding it to the ./opt folder.
Users can then copy the jar file from ./opt to ./lib to include the table API in the classpath
of Flink.



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