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https://issues.apache.org/jira/browse/HDFS-9260?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15966680#comment-15966680
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Andrew Wang commented on HDFS-9260:
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One other question from our team, what's the typical block size on a Yahoo
cluster?
> Improve the performance and GC friendliness of NameNode startup and full
> block reports
> --------------------------------------------------------------------------------------
>
> Key: HDFS-9260
> URL: https://issues.apache.org/jira/browse/HDFS-9260
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode, namenode, performance
> Affects Versions: 2.7.1
> Reporter: Staffan Friberg
> Assignee: Staffan Friberg
> Fix For: 3.0.0-alpha1
>
> Attachments: FBR processing.png, HDFS-7435.001.patch,
> HDFS-7435.002.patch, HDFS-7435.003.patch, HDFS-7435.004.patch,
> HDFS-7435.005.patch, HDFS-7435.006.patch, HDFS-7435.007.patch,
> HDFS-9260.008.patch, HDFS-9260.009.patch, HDFS-9260.010.patch,
> HDFS-9260.011.patch, HDFS-9260.012.patch, HDFS-9260.013.patch,
> HDFS-9260.014.patch, HDFS-9260.015.patch, HDFS-9260.016.patch,
> HDFS-9260.017.patch, HDFS-9260.018.patch, HDFSBenchmarks2.zip,
> HDFSBenchmarks.zip, HDFS Block and Replica Management 20151013.pdf
>
>
> This patch changes the datastructures used for BlockInfos and Replicas to
> keep them sorted. This allows faster and more GC friendly handling of full
> block reports.
> Would like to hear peoples feedback on this change.
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