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https://issues.apache.org/jira/browse/MAPREDUCE-7409?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17598364#comment-17598364
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ASF GitHub Bot commented on MAPREDUCE-7409:
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9uapaw commented on PR #4816:
URL: https://github.com/apache/hadoop/pull/4816#issuecomment-1232904463
I think the default length 64 is all right in terms of backwards
compatibility. My idea was to run the whole test suite with the default value
set to 256, just to be sure, that it will not break anything. The final PR
should default to 64 though.
> Make shuffle key length configurable
> ------------------------------------
>
> Key: MAPREDUCE-7409
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7409
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: mrv2
> Reporter: András Győri
> Assignee: groot
> Priority: Major
> Labels: pull-request-available
>
> FIPS-compliant HMAC-SHA1 algorithms require secret keys to be at least 112
> bits long.
> [https://github.com/apache/hadoop/blob/231a4468cdb83f9c2ff8897e70fe7c3d23b58cf4/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java#L180]
> could be made configurable in order to remain FIPS-compliant.
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