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[HDFS-7435] PB encoding of block reports is very inefficient - HDFS - [issue]
...Block reports are encoded as a PB repeating long.  Repeating fields use an ArrayList with default capacity of 10.  A block report containing tens or hundreds of thousand of longs (...
http://issues.apache.org/jira/browse/HDFS-7435    Author: Daryn Sharp, 2014-12-15, 23:14
[HDFS-7503] Namenode restart after large deletions can cause slow processReport (due to logging) - HDFS - [issue]
...If a large directory is deleted and namenode is immediately restarted, there are a lot of blocks that do not belong to any file. This results in a log:2014-11-08 03:11:45,584 INFO BlockState...
http://issues.apache.org/jira/browse/HDFS-7503    Author: Arpit Agarwal, 2014-12-15, 21:54
[HDFS-7023] use libexpat instead of libxml2 for libhdfs3 - HDFS - [issue]
...As commented in HDFS-6994, libxml2 may has some thread safe issue....
http://issues.apache.org/jira/browse/HDFS-7023    Author: Zhanwei Wang, 2014-12-15, 21:00
[HDFS-4063] Unable to change JAVA_HOME directory in hadoop-setup-conf.sh script. - HDFS - [issue]
...The JAVA_HOME directory remains unchanged no matter what you enter when you run hadoop-setup-conf.sh to generate hadoop configurations. Please see below example:*****************************...
http://issues.apache.org/jira/browse/HDFS-4063    Author: Haoquan Wang, 2014-12-15, 18:44
[HDFS-2628] Remove Mapred filenames from HDFS findbugsExcludeFile.xml file - HDFS - [issue]
...Mapreduce filesnames are there in hadoop-hdfs-project\hadoop-hdfs\dev-support\findbugsExcludeFile.xmlis it intentional? i think we should remove them from HDFS.Exampl:  <!--&nbs...
http://issues.apache.org/jira/browse/HDFS-2628    Author: Uma Maheswara Rao G, 2014-12-15, 18:43
[HDFS-6239] start-dfs.sh does not start remote DataNode due to escape characters - HDFS - [issue]
...start-dfs.sh fails to start remote data nodes and task nodes, though it is possible to start them manually through hadoop-daemon.sh.I've been able to debug and find the root cause the bug, a...
http://issues.apache.org/jira/browse/HDFS-6239    Author: xyzzy, 2014-12-15, 18:41
[HDFS-2256] we should add a wait for non-safe mode and call dfsadmin -report in start-dfs - HDFS - [issue]
...I think we should add a call to wait for safe mode exit and print the dfs report to show upgrades that are in progress....
http://issues.apache.org/jira/browse/HDFS-2256    Author: Owen OMalley, 2014-12-15, 18:35
[HDFS-7526] SetReplication OutOfMemoryError - HDFS - [issue]
...Setting the replication of a HDFS folder recursively can run out of memory. E.g. with a large /var/log directory:hdfs dfs -setrep -R -w 1 /var/logException in thread "main" java.lang.OutOfMe...
http://issues.apache.org/jira/browse/HDFS-7526    Author: Philipp Schuegerl, 2014-12-15, 17:28
[HDFS-5442] Zero loss HDFS data replication for multiple datacenters - HDFS - [issue]
...Hadoop is architected to operate efficiently at scale for normal hardware failures within a datacenter. Hadoop is not designed today to handle datacenter failures. Although HDFS is not desig...
http://issues.apache.org/jira/browse/HDFS-5442    Author: Avik Dey, 2014-12-15, 17:25
[HDFS-7524] TestRetryCacheWithHA.testUpdatePipeline fails occasionally in trunk - HDFS - [issue]
...https://builds.apache.org/job/Hadoop-Hdfs-trunk/1974/testReport/Error MessageAfter waiting the operation updatePipeline still has not taken effect on NN yetStacktracejava.lang.AssertionError...
http://issues.apache.org/jira/browse/HDFS-7524    Author: Yongjun Zhang, 2014-12-15, 17:23
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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