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From "Su Ralph (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-6126) Yet another conflict : guava
Date Mon, 20 Mar 2017 11:54:42 GMT

    [ https://issues.apache.org/jira/browse/FLINK-6126?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15932537#comment-15932537

Su Ralph commented on FLINK-6126:

This looks due to incorrect local build of flink.

Documentation at https://ci.apache.org/projects/flink/flink-docs-release-1.2/setup/building.html
shows clearly that 

NOTE: Maven 3.3.x can build Flink, but will not properly shade away certain dependencies.
Maven 3.0.3 creates the libraries properly. To build unit tests with Java 8, use Java 8u51
or above to prevent failures in unit tests that use the PowerMock runner.

My local flink jar was build by maven3.3.3, which the shade of guava is not well set. Cause
the conflict of elastic search(guava 18) and the packaged ones(should be the ones from hadoop

> Yet another conflict : guava
> ----------------------------
>                 Key: FLINK-6126
>                 URL: https://issues.apache.org/jira/browse/FLINK-6126
>             Project: Flink
>          Issue Type: Bug
>          Components: Build System, Local Runtime
>    Affects Versions: 1.2.0
>         Environment: Latest SNAPSHOT
>            Reporter: Su Ralph
> When write a user function try to write to elastic search (depend on elasticsearch 2.3.5)
> Stack like:
> java.lang.NoSuchMethodError: com.google.common.util.concurrent.MoreExecutors.directExecutor()Ljava/util/concurrent/Executor;
>         at org.elasticsearch.threadpool.ThreadPool.<clinit>(ThreadPool.java:190)
>         at org.elasticsearch.client.transport.TransportClient$Builder.build(TransportClient.java:131)
>         at io.sherlock.capabilities.es.AbstractEsSink.open(AbstractEsSink.java:98)
> When enable env.java.opts.taskmanager to -version:class, we can see the class load log
> [Loaded com.google.common.util.concurrent.MoreExecutors from file:/opt/flink/lib/flink-dist_2.11-1.2.0.jar]
> The user code is using guva of 18.0.

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