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Kihwal Lee commented on HDFS-9260: ---------------------------------- I propose revert of this. HDFS-13671 also reports about 4x slower performance. It might help GC, but regular operations are being affected too much. > 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 > Priority: Major > Fix For: 3.0.0-alpha1 > > Attachments: FBR processing.png, HDFS Block and Replica Management > 20151013.pdf, 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, > HDFSBenchmarks.zip, HDFSBenchmarks2.zip > > > 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. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org