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[HDFS-5620] NameNode: implement Global ACL Set as a memory optimization. - HDFS - [issue]
...The AclManager can maintain a Global ACL Set to store all distinct ACLs in use by the file system.  All inodes that have the same ACL entries can share the same ACL instance....
http://issues.apache.org/jira/browse/HDFS-5620    Author: Chris Nauroth, 2014-12-05, 19:09
Re: Clarification related to ACL with setPermission - HDFS - [mail # dev]
...Hi Vinay,The behavior you described is correct according to the POSIX ACL model.The reason for this is that once a file has an ACL, its group permissionbits are then used as the mask entry, ...
   Author: Chris Nauroth, 2014-11-25, 22:16
[HDFS-7313] Support optional configuration of AES cipher suite on DataTransferProtocol. - HDFS - [issue]
...HDFS-6606 introduced use of AES for encryption of DataTransferProtocol.  This issue proposes introduction of a configuration property for administrators to control whether or not AES is...
http://issues.apache.org/jira/browse/HDFS-7313    Author: Chris Nauroth, 2014-11-24, 07:05
[HDFS-7425] NameNode block deletion logging uses incorrect appender. - HDFS - [issue]
...The NameNode uses 2 separate Log4J appenders for tracking state changes.  The appenders are named "org.apache.hadoop.hdfs.StateChange" and "BlockStateChange".  The intention of Blo...
http://issues.apache.org/jira/browse/HDFS-7425    Author: Chris Nauroth, 2014-11-22, 15:38
[expand - 1 more] - Re: [VOTE] Release Apache Hadoop 2.6.0 - HDFS - [mail # dev]
...Hi Eric,There was a second release candidate created (named rc1), and votingstarted fresh in a new thread.  You might want to join in on that secondthread to make sure that your vote ge...
   Author: Chris Nauroth, 2014-11-15, 00:02
[HDFS-6711] FSNamesystem#getAclStatus does not write to the audit log. - HDFS - [issue]
...Consider writing an event to the audit log for the getAclStatus method....
http://issues.apache.org/jira/browse/HDFS-6711    Author: Chris Nauroth, 2014-11-14, 19:51
[HDFS-4702] remove namesystem lock from DatanodeManager#fetchDatanodes - HDFS - [issue]
...DatanodeManager#fetchDatanodes currently holds the namesystem read lock while iterating through data nodes.  This method is called from the namenode web UI.  HDFS-3990 reported a p...
http://issues.apache.org/jira/browse/HDFS-4702    Author: Chris Nauroth, 2014-11-13, 22:19
[HDFS-7382] DataNode in secure mode may throw NullPointerException if client connects before DataNode registers itself with NameNode. - HDFS - [issue]
...SaslDataTransferServer#receive needs to check if the DataNode is listening on a privileged port.  It does this by checking the address from the DatanodeID.  However, there is a win...
http://issues.apache.org/jira/browse/HDFS-7382    Author: Chris Nauroth, 2014-11-10, 18:53
[HDFS-7328] TestTraceAdmin assumes Unix line endings. - HDFS - [issue]
...TestTraceAdmin contains some string assertions that assume Unix line endings.  The test fails on Windows....
http://issues.apache.org/jira/browse/HDFS-7328    Author: Chris Nauroth, 2014-11-10, 18:32
[HDFS-7367] HDFS short-circuit read cannot negotiate shared memory slot and file descriptors when SASL is enabled on DataTransferProtocol. - HDFS - [issue]
...When both short-circuit read and SASL on DataTransferProtocol are enabled, the server side tries to negotiate SASL on the operation to allocate a new shared memory slot.  However, the t...
http://issues.apache.org/jira/browse/HDFS-7367    Author: Chris Nauroth, 2014-11-06, 15:12
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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