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Staffan Friberg updated HDFS-9260: ---------------------------------- Attachment: (was: HDFS Block and Replica Management 20151013.pdf) > Improve performance and GC friendliness of startup and FBRs > ----------------------------------------------------------- > > 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 > Attachments: HDFS Block and Replica Management 20151013.pdf, > HDFS-7435.001.patch > > > 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 and also some help > investigating/understanding a few outstanding issues if we are interested in > moving forward with this. > There seems to be some timing issues I hit when testing the patch, not sure > if it is a bug in the patch or something else (most likely the earlier)... > Tests that fail for me: > The issues seems to be that the blocks is not on any storage, so no > replication can occurs causing the tests to fail in different ways. > TestDecomission.testDecommision > If I add a little sleep after the cleanup/delete things seem to work > TestDFSStripedOutputStreamWithFailure > A couple of tests fails in this class. -- This message was sent by Atlassian JIRA (v6.3.4#6332)