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[YARN-2964] RM prematurely cancels tokens for jobs that submit jobs (oozie) - YARN - [issue]
...The RM used to globally track the unique set of tokens for all apps.  It remembered the first job that was submitted with the token.  The first job controlled the cancellation of t...
http://issues.apache.org/jira/browse/YARN-2964    Author: Daryn Sharp, 2014-12-19, 22:06
[HADOOP-9789] Support server advertised kerberos principals - Hadoop - [issue]
...The RPC client currently constructs the kerberos principal based on the a config value, usually with an _HOST substitution.  This means the service principal must match the hostname the...
http://issues.apache.org/jira/browse/HADOOP-9789    Author: Daryn Sharp, 2014-12-18, 11:47
[HDFS-7005] DFS input streams do not timeout - HDFS - [issue]
...Input streams lost their timeout.  The problem appears to be DFSClient#newConnectedPeer does not set the read timeout.  During a temporary network interruption the server will clos...
http://issues.apache.org/jira/browse/HDFS-7005    Author: Daryn Sharp, 2014-12-16, 16:40
[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
[HADOOP-9363] AuthenticatedURL will NPE if server closes connection - Hadoop - [issue]
...A NPE occurs if the server unexpectedly closes the connection for an AuthenticatedURL w/o sending a response....
http://issues.apache.org/jira/browse/HADOOP-9363    Author: Daryn Sharp, 2014-12-15, 19:24
[HADOOP-10941] Proxy user verification NPEs if remote host is unresolvable - Hadoop - [issue]
...A null is passed to the impersonation providers for the remote address if it is unresolvable.  DefaultImpersationProvider will NPE, ipc will close the connection immediately (correct be...
http://issues.apache.org/jira/browse/HADOOP-10941    Author: Daryn Sharp, 2014-12-05, 04:53
[HDFS-7457] DatanodeID generates excessive garbage - HDFS - [issue]
...DatanodeID#getXferAddr is a dynamically generated string.  This string is repeatedly generated for the hash code, equality, comparisons, and stringification.  Every DN->NN RPC m...
http://issues.apache.org/jira/browse/HDFS-7457    Author: Daryn Sharp, 2014-12-05, 01:28
[HDFS-7433] DatanodeManager#datanodeMap should be a HashMap, not a TreeMap, to optimize lookup performance - HDFS - [issue]
...The datanode map is currently a TreeMap.  For many thousands of datanodes, tree lookups are ~10X more expensive than a HashMap.  Insertions and removals are up to 100X more expensi...
http://issues.apache.org/jira/browse/HDFS-7433    Author: Daryn Sharp, 2014-12-04, 04:09
[HDFS-7434] DatanodeID hashCode should not be mutable - HDFS - [issue]
...Mutable hash codes may lead to orphaned instances in a collection.  Instances must always be removed prior to modification of hash code values, and re-inserted.  Although current c...
http://issues.apache.org/jira/browse/HDFS-7434    Author: Daryn Sharp, 2014-11-24, 16:42
[HDFS-6326] WebHdfs ACL compatibility is broken - HDFS - [issue]
...2.4 ACL support is completely incompatible with <2.4 webhdfs servers.  The NN throws an IllegalArgumentException exception.hadoop fs -ls webhdfs://nn/Found 21 itemsls: Invalid value ...
http://issues.apache.org/jira/browse/HDFS-6326    Author: Daryn Sharp, 2014-11-14, 17:55
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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