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https://issues.apache.org/jira/browse/HDFS-16284?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yuxuan Wang updated HDFS-16284:
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Description:
When upgrade cluster from 2.6 to 3.1, namenode fall into full GC trouble.
NN run 3.1 version and DN run 2.6 version, block report type is longs not PB in
> Unboxing long value in old version's block report cause full GC
> ---------------------------------------------------------------
>
> Key: HDFS-16284
> URL: https://issues.apache.org/jira/browse/HDFS-16284
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Yuxuan Wang
> Assignee: Yuxuan Wang
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When upgrade cluster from 2.6 to 3.1, namenode fall into full GC trouble.
> NN run 3.1 version and DN run 2.6 version, block report type is longs not PB
> in
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