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https://issues.apache.org/jira/browse/FLINK-6624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16015487#comment-16015487
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ASF GitHub Bot commented on FLINK-6624:
---------------------------------------
GitHub user kl0u opened a pull request:
https://github.com/apache/flink/pull/3938
[FLINK-6624] [cep] Fix SharedBuffer#hashCode().
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/kl0u/flink cep-hash
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3938.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #3938
----
commit e28380152a27dcbc794fae5b023e3223699a5813
Author: kkloudas <kklou...@gmail.com>
Date: 2017-05-18T09:27:42Z
[FLINK-6624] [cep] Fix SharedBuffer#hashCode().
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> SharedBuffer#hashCode() uses multiplier in wrong way
> ----------------------------------------------------
>
> Key: FLINK-6624
> URL: https://issues.apache.org/jira/browse/FLINK-6624
> Project: Flink
> Issue Type: Bug
> Reporter: Ted Yu
> Assignee: Kostas Kloudas
> Priority: Minor
>
> In SharedBuffer.java:
> {code}
> public int hashCode() {
> return (int) (31 * (timestamp ^ timestamp >>> 32) + 31 *
> value.hashCode()) + counter;
> {code}
> Multiplier of 31 is applied to both (timestamp ^ timestamp >>> 32) and
> value.hashCode().
> The following is probably the right expression:
> {code}
> return (int) 31 * (31 * (timestamp ^ timestamp >>> 32) +
> value.hashCode()) + counter;
> {code}
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