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[HDFS-3312] Hftp selects wrong token service - HDFS - [issue]
...Hftp tries to select a token based on the non-secure port in the uri, instead of the secure-port.  This breaks hftp on a secure cluster and there is no workaround....
http://issues.apache.org/jira/browse/HDFS-3312    Author: Daryn Sharp, 2015-03-10, 04:36
[HDFS-2336] hftp only supports remote hdfs servers - HDFS - [issue]
...The new token renewal implementation appears to introduce invalid assumptions regarding token kinds.Any token acquired over http is assumed to be hftp, so the kind is unconditionally changed...
http://issues.apache.org/jira/browse/HDFS-2336    Author: Daryn Sharp, 2015-03-10, 01:43
[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, 2015-03-05, 15:50
[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
[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
[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
[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, 2015-01-16, 15:41
[HDFS-7607] Use random rack-local node for webhdfs opens to avoid OOM on DNs - HDFS - [issue]
...Webhdfs currently redirects a client to the DN that physically has one of thereplicas.  Unlike the hdfs data streamer protocol which can easily handle hundreds or thousands of connectio...
http://issues.apache.org/jira/browse/HDFS-7607    Author: Daryn Sharp, 2015-01-14, 15:58
[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
[HDFS-7213] processIncrementalBlockReport performance degradation - HDFS - [issue]
...BlockManager#processIncrementalBlockReport has a debug line that is missing a isDebugEnabled check.  The write lock is being held.  Coupled with the increase in incremental block r...
http://issues.apache.org/jira/browse/HDFS-7213    Author: Daryn Sharp, 2014-10-29, 14:19
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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