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[HDFS-6758] block writer should pass the expected block size to DataXceiverServer - HDFS - [issue]
...DataXceiver initializes the block size to the default block size for the cluster. This size is later used by the FsDatasetImpl when applying VolumeChoosingPolicy.    block.set...
http://issues.apache.org/jira/browse/HDFS-6758    Author: Arpit Agarwal, 2014-07-29, 19:40
[HDFS-6769] TestRefreshCallQueue and TestGenericRefresh should use ephemeral ports - HDFS - [issue]
...TestRefreshCallQueue and TestGenericRefresh use the same hard-coded port number (54222) leaving them susceptible to 'port in use' errors with parallel testing as seen here.Error MessageProbl...
http://issues.apache.org/jira/browse/HDFS-6769    Author: Arpit Agarwal, 2014-07-29, 19:39
[HDFS-6768] TestBlockRecovery, TestRefreshCallQueue and TestGenericRefresh should use ephemeral ports - HDFS - [issue]
...TestBlockRecovery uses hard-coded port numbers making it susceptible to 'port in use' errors as seen hereError MessagePort in use: localhost:50070Stacktracejava.net.BindException: Port in us...
http://issues.apache.org/jira/browse/HDFS-6768    Author: Arpit Agarwal, 2014-07-29, 19:39
[HDFS-6441] Add ability to exclude/include few datanodes while balancing - HDFS - [issue]
...In some use cases, it is desirable to ignore a few data nodes  while balancing. The administrator should be able to specify a list of data nodes in a file similar to the hosts file and ...
http://issues.apache.org/jira/browse/HDFS-6441    Author: Benoy Antony, 2014-07-29, 19:38
[HDFS-557] documentation for dfsadmin, datanode, etc is using bin/hadoop instead of bin/hdfs - HDFS - [issue]
...forest documentation is using bin/hadoop for dfsadmin command help instead of bin/hdfs...
http://issues.apache.org/jira/browse/HDFS-557    Author: Boris Shkolnik, 2014-07-29, 19:30
[HDFS-5189] Rename the "CorruptBlocks" metric to "CorruptReplicas" - HDFS - [issue]
...The NameNode increments a "CorruptBlocks" metric even if only one of the block'sreplicas is reported corrupt (genuine checksum fail, or even if areplica has a bad genstamp). In cases where t...
http://issues.apache.org/jira/browse/HDFS-5189    Author: Harsh J, 2014-07-29, 18:53
[HDFS-6766] optimize ack notify mechanism to avoid thundering herd issue - HDFS - [issue]
...Currently, DFSOutputStream uses wait/notifyAll to coordinate ack receiving and ack waiting, etc..say there're 5 threads(t1,t2,t3,t4,t5) wait for ack seq no: 1,2,3,4,5, once the no. 1 ack arr...
http://issues.apache.org/jira/browse/HDFS-6766    Author: Liang Xie, 2014-07-29, 18:20
[HDFS-6570] add api that enables checking if a user has certain permissions on a file - HDFS - [issue]
...For some of the authorization modes in Hive, the servers in Hive check if a given user has permissions on a certain file or directory. For example, the storage based authorization mode allow...
http://issues.apache.org/jira/browse/HDFS-6570    Author: Thejas M Nair, 2014-07-29, 17:39
[HDFS-6763] Standby NN stalls after processing edits - HDFS - [issue]
...FSImage#loadEdits calls updateCountForQuota to recalculate & verify quotas for the entire namespace.  A standby NN using shared edits calls this method every minute.  The stand...
http://issues.apache.org/jira/browse/HDFS-6763    Author: Daryn Sharp, 2014-07-29, 17:17
[HDFS-6764] DN heartbeats may become clumped together - HDFS - [issue]
...DNs send heartbeats on a fixed schedule based on the last time a heartbeat was sent.  If the NN takes longer to respond than the heartbeat interval then DNs do not sleep until the next ...
http://issues.apache.org/jira/browse/HDFS-6764    Author: Daryn Sharp, 2014-07-29, 17:00
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