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[HDFS-4638] TransferFsImage should take Configuration as parameter - HDFS - [issue]
...TransferFsImage currently creates a new HdfsConfiguration object, rather than taking one passed in. This means that using dfsadmin -fetchImage, you can't pass a different timeout on the comm...
http://issues.apache.org/jira/browse/HDFS-4638    Author: Todd Lipcon, 2015-03-22, 22:40
[HDFS-2771] Move Federation and WebHDFS documentation into HDFS project - HDFS - [issue]
...For some strange reason, the WebHDFS and Federation documentation is currently in the hadoop-yarn site. This is counter-intuitive. We should move these documents to an hdfs site, or if we th...
http://issues.apache.org/jira/browse/HDFS-2771    Author: Todd Lipcon, 2015-03-16, 20:06
[HDFS-3280] DFSOutputStream.sync should not be synchronized - HDFS - [issue]
...HDFS-895 added an optimization to make hflush() much faster by unsynchronizing it. But, we forgot to un-synchronize the deprecated sync() wrapper method. This makes the HBase WAL really slow...
http://issues.apache.org/jira/browse/HDFS-3280    Author: Todd Lipcon, 2015-03-16, 19:57
[HDFS-1029] Image corrupt with number of files = 1 - HDFS - [issue]
...Last week I recovered a corrupt namenode image that was completely sane except that the "number of files" in the header was set to 1, rather than the correct number (many million). The NN in...
http://issues.apache.org/jira/browse/HDFS-1029    Author: Todd Lipcon, 2015-03-12, 02:00
[HDFS-2115] Transparent compression in HDFS - HDFS - [issue]
...In practice, we find that a lot of users store text data in HDFS without using any compression codec. Improving usability of compressible formats like Avro/RCFile helps with this, but we cou...
http://issues.apache.org/jira/browse/HDFS-2115    Author: Todd Lipcon, 2015-03-10, 18:11
[HDFS-2956] calling fetchdt without a --renewer argument throws NPE - HDFS - [issue]
...If I call "bin/hdfs fetchdt /tmp/mytoken" without a "--renewer foo" argument, then it will throw a NullPointerException:Exception in thread "main" java.lang.NullPointerException   ...
http://issues.apache.org/jira/browse/HDFS-2956    Author: Todd Lipcon, 2015-03-10, 08:54
[HDFS-1787] "Not enough xcievers" error should propagate to client - HDFS - [issue]
...We find that users often run into the default transceiver limits in the DN. Putting aside the inherent issues with xceiver threads, it would be nice if the "xceiver limit exceeded" error pro...
http://issues.apache.org/jira/browse/HDFS-1787    Author: Todd Lipcon, 2015-03-10, 06:55
[HDFS-2174] Complete decoupling of failure states between edits and image dirs - HDFS - [issue]
...After HDFS-1073, there is no reason to couple the failure state of edits dirs and image dirs. However, there is still a small amount of coupling in that image dirs are restored only when edi...
http://issues.apache.org/jira/browse/HDFS-2174    Author: Todd Lipcon, 2015-03-10, 01:54
[HDFS-2213] DataNode gets stuck while shutting down minicluster - HDFS - [issue]
...I've seen a couple times where a unit test has timed out. jstacking shows the cluster is stuck trying to shut down one of the DataNode HTTP servers. The DataNodeBlockScanner thread also seem...
http://issues.apache.org/jira/browse/HDFS-2213    Author: Todd Lipcon, 2015-03-10, 01:51
[HDFS-2173] saveNamespace should not throw IOE when only one storage directory fails to write VERSION file - HDFS - [issue]
...This JIRA tracks a TODO in TestSaveNamespace. Currently, if, while writing the VERSION files in the storage directories, one of the directories fails, the entire operation throws IOE. This i...
http://issues.apache.org/jira/browse/HDFS-2173    Author: Todd Lipcon, 2015-03-10, 01:50
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB