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Hudson commented on HDFS-6325: ------------------------------ FAILURE: Integrated in Hadoop-Hdfs-trunk #1754 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1754/]) HDFS-6325. Append should fail if the last block has insufficient number of replicas (Keith Pak via cos) (cos: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1595744) * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java * /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestFileAppend4.java > Append should fail if the last block has insufficient number of replicas > ------------------------------------------------------------------------ > > Key: HDFS-6325 > URL: https://issues.apache.org/jira/browse/HDFS-6325 > Project: Hadoop HDFS > Issue Type: Bug > Components: namenode > Affects Versions: 2.2.0 > Reporter: Konstantin Shvachko > Assignee: Keith Pak > Fix For: 2.4.1 > > Attachments: HDFS-6325.patch, HDFS-6325.patch, HDFS-6325.patch, > HDFS-6325.patch, HDFS-6325_test.patch, appendTest.patch > > > Currently append() succeeds on a file with the last block that has no > replicas. But the subsequent updatePipeline() fails as there are no replicas > with the exception "Unable to retrieve blocks locations for last block". This > leaves the file unclosed, and others can not do anything with it until its > lease expires. > The solution is to check replicas of the last block on the NameNode and fail > during append() rather than during updatePipeline(). > How many replicas should be present before NN allows to append? I see two > options: > # min-replication: allow append if the last block is minimally replicated (1 > by default) > # full-replication: allow append if the last block is fully replicated (3 by > default) -- This message was sent by Atlassian JIRA (v6.2#6252)