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[HDFS-6899] Allow changing MiniDFSCluster volumes per DN and capacity per volume - HDFS - [issue]
...MiniDFSCluster hardcodes the number of directories per volume to two. Propose removing the hard-coded restriction.It would be useful to limit the capacity of individual storage directories f...
http://issues.apache.org/jira/browse/HDFS-6899    Author: Arpit Agarwal, 2014-08-21, 02:40
[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, 2014-08-21, 02:14
[HDFS-6900] Eliminate DU thread per block pool slice - HDFS - [issue]
...We use one DU thread per block pool slice to compute disk usage information. In addition to the thread overhead this results in the disk usage information being out of date for up to 10 minu...
http://issues.apache.org/jira/browse/HDFS-6900    Author: Arpit Agarwal, 2014-08-21, 02:02
[HDFS-5151] Add test case for commitBlockSynchronization with invalid Storage - HDFS - [issue]
...Per title, we need a new test case to cover this....
http://issues.apache.org/jira/browse/HDFS-5151    Author: Arpit Agarwal, 2014-08-20, 18:07
[HDFS-6860] BlockStateChange logs are too noisy - HDFS - [issue]
...Block State Change logs are too noisy at the default INFO level and affect NN performance on busy clusters.Most of these state changes can be logged at debug level instead....
http://issues.apache.org/jira/browse/HDFS-6860    Author: Arpit Agarwal, 2014-08-19, 17:20
[HDFS-5851] Support memory as a storage medium - HDFS - [issue]
...Memory can be used as a storage medium for smaller/transient files for fast write throughput.More information/design will be added later....
http://issues.apache.org/jira/browse/HDFS-5851    Author: Arpit Agarwal, 2014-08-18, 21:15
[HDFS-6862] Add missing timeout annotations to tests - HDFS - [issue]
...One or more tests in the following classes are missing timeout annotations. org.apache.hadoop.hdfs.server.namenode.TestValidateConfigurationSettings org.apache.hadoop.hdfs.server.namenode.ha...
http://issues.apache.org/jira/browse/HDFS-6862    Author: Arpit Agarwal, 2014-08-18, 16:41
[expand - 1 more] - Re: [DISCUSS] Switch to log4j 2 - HDFS - [mail # dev]
...The block state change logs are indeed too noisy at INFO and I've not foundthem useful when troubleshooting. Just filed HDFS-6860 to fix that.This is orthogal to SLF4J migration however movi...
   Author: Arpit Agarwal, 2014-08-17, 18:16
[HDFS-6581] Write to single replica in memory - HDFS - [issue]
...Per discussion with the community on HDFS-5851, we will implement writing to a single replica in DN memory via DataTransferProtocol.This avoids some of the issues with short-circuit writes, ...
http://issues.apache.org/jira/browse/HDFS-6581    Author: Arpit Agarwal, 2014-08-15, 00:03
[HDFS-5682] Heterogeneous Storage phase 2 - APIs to expose Storage Types - HDFS - [issue]
...Phase 1 (HDFS-2832) added support to present the DataNode as a collection of discrete storages of different types.This Jira is to track phase 2 of the Heterogeneous Storage work which involv...
http://issues.apache.org/jira/browse/HDFS-5682    Author: Arpit Agarwal, 2014-08-14, 23:59
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