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[HDFS-3828] Block Scanner rescans blocks too frequently - HDFS - [issue]
...BlockPoolSliceScanner#scan calls cleanUp every time it's invoked from DataBlockScanner#run via scanBlockPoolSlice.  But cleanUp unconditionally roll()s the verificationLogs, so after tw...
http://issues.apache.org/jira/browse/HDFS-3828    Author: Andy Isaacson, 2014-04-29, 15:44
[HDFS-4211] failed volume causes DataNode#getVolumeInfo NPEs on multi-BP DN - HDFS - [issue]
...On a DN with failed.volumes.tolerated=0 a disk went bad. After restarting the DN, the following backtrace was observed when accessing /jmx:2012-06-12 16:21:43,248 ERROR org.apache.hadoop.jmx...
http://issues.apache.org/jira/browse/HDFS-4211    Author: Andy Isaacson, 2014-04-29, 02:53
[HDFS-3934] duplicative dfs_hosts entries handled wrong - HDFS - [issue]
...A dead DN listed in dfs_hosts_allow.txt by IP and in dfs_hosts_exclude.txt by hostname ends up being displayed twice in dfsnodelist.jsp?whatNodes=DEAD after the NN restarts because getDatano...
http://issues.apache.org/jira/browse/HDFS-3934    Author: Andy Isaacson, 2014-04-04, 00:23
[HDFS-4284] BlockReaderLocal not notified of failed disks - HDFS - [issue]
...When a DN marks a disk as bad, it stops using replicas on that disk.However a long-running BlockReaderLocal instance will continue to access replicas on the failing disk.Somehow we should le...
http://issues.apache.org/jira/browse/HDFS-4284    Author: Andy Isaacson, 2014-02-04, 21:34
[HDFS-4329] DFSShell issues with directories with spaces in name - HDFS - [issue]
...This bug was discovered by Casey Ching.The command dfs -put /foo/hello.txt dir is supposed to create dir/hello.txt on HDFS.  It doesn't work right if "dir" has a space in it:[adi@haus01...
http://issues.apache.org/jira/browse/HDFS-4329    Author: Andy Isaacson, 2014-01-28, 19:02
[HDFS-4205] fsck fails with symlinks - HDFS - [issue]
...I created a symlink using...    FileContext fc = FileContext.getFileContext(dst.fs.getUri());    for (PathData src : srcs) {      fc.createS...
http://issues.apache.org/jira/browse/HDFS-4205    Author: Andy Isaacson, 2013-06-22, 14:47
[HDFS-4387] libhdfs doesn't work with jamVM - HDFS - [issue]
...Building and running tests on OpenJDK 7 on Ubuntu 12.10 fails with mvn test -Pnative.  The output is hard to decipher but the underlying issue is that test_libhdfs_native segfaults at s...
http://issues.apache.org/jira/browse/HDFS-4387    Author: Andy Isaacson, 2013-05-13, 18:46
[HDFS-4253] block replica reads get hot-spots due to NetworkTopology#pseudoSortByDistance - HDFS - [issue]
...When many nodes (10) read from the same block simultaneously, we get asymmetric distribution of read load.  This can result in slow block reads when one replica is serving most of the r...
http://issues.apache.org/jira/browse/HDFS-4253    Author: Andy Isaacson, 2013-03-05, 07:25
[HDFS-4439] umask-mode does not support 4-digit umask value - HDFS - [issue]
...Best practice for specifying file permissions using the legacy octal format is to always add a leading "0" to ensure the value is treated as octal.  However the fs.permissions.umask-mod...
http://issues.apache.org/jira/browse/HDFS-4439    Author: Andy Isaacson, 2013-02-26, 07:33
[HDFS-3919] MiniDFSCluster:waitClusterUp can hang forever - HDFS - [issue]
...A test run hung due to a known system config issue, but the hang was interesting:2012-09-11 13:22:41,888 WARN  hdfs.MiniDFSCluster (MiniDFSCluster.java:waitClusterUp(925)) - Waiting for...
http://issues.apache.org/jira/browse/HDFS-3919    Author: Andy Isaacson, 2013-02-06, 17:05
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