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[HADOOP-10504] Document proxy server support - Hadoop - [issue]
...Document http proxy support introduced by HADOOP-10498....
http://issues.apache.org/jira/browse/HADOOP-10504    Author: Daryn Sharp, 2015-03-01, 06:16
[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, 2015-02-27, 23:22
[HADOOP-11628] SPNEGO auth does not work with CNAMEs in JDK8 - Hadoop - [issue]
...Pre-JDK8, GSSName auto-canonicalized the hostname when constructing the principal for SPNEGO.  JDK8 no longer does this which breaks the use of user-friendly CNAMEs for services....
http://issues.apache.org/jira/browse/HADOOP-11628    Author: Daryn Sharp, 2015-02-24, 23:09
[HDFS-6967] DNs may OOM under high webhdfs load - HDFS - [issue]
...Webhdfs uses jetty.  The size of the request thread pool is limited, but jetty will accept and queue infinite connections.  Every queued connection is "heavy" with buffers, etc. &n...
http://issues.apache.org/jira/browse/HDFS-6967    Author: Daryn Sharp, 2015-02-23, 16:36
[HADOOP-9374] Add tokens from -tokenCacheFile into UGI - Hadoop - [issue]
...GenericOptionsParser accepts a -tokenCacheFile option.  However, it only sets the mapreduce.job.credentials.json conf value instead of also adding the tokens to the UGI so they are usab...
http://issues.apache.org/jira/browse/HADOOP-9374    Author: Daryn Sharp, 2015-02-11, 12:07
[HDFS-7597] Clients seeking over webhdfs may crash the NN - HDFS - [issue]
...Webhdfs seeks involve closing the current connection, and reissuing a new open request with the new offset.  The RPC layer caches connections so the DN keeps a lingering connection open...
http://issues.apache.org/jira/browse/HDFS-7597    Author: Daryn Sharp, 2015-02-07, 03:09
[HADOOP-9317] User cannot specify a kerberos keytab for commands - Hadoop - [issue]
...UserGroupInformation only allows kerberos users to be logged in via the ticket cache when running hadoop commands.  UGI allows a keytab to be used, but it's only exposed programatically...
http://issues.apache.org/jira/browse/HADOOP-9317    Author: Daryn Sharp, 2015-02-05, 19:06
[HDFS-2473] Fetching tokens from insecure cluster throws NPEs - HDFS - [issue]
...Retrieving tokens from an insecure cluster throws an NPE.  This prevents copies from insecure to secure clusters.  The problem is in DFSClient.getDelegationToken().  It attemp...
http://issues.apache.org/jira/browse/HDFS-2473    Author: Daryn Sharp, 2015-02-05, 17:18
[HADOOP-9645] KerberosAuthenticator NPEs on connect error - Hadoop - [issue]
...A NPE occurs if there's a kerberos error during initial connect.  In this case, the NN was using a HTTP service principal with a stale kvno.  It causes webhdfs to fail in a non-use...
http://issues.apache.org/jira/browse/HADOOP-9645    Author: Daryn Sharp, 2015-02-05, 13:42
[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, 2015-01-30, 19:15
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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