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[HDFS-8345] Storage policy APIs must be exposed via the FileSystem interface - HDFS - [issue]
...The storage policy APIs are not exposed via FileSystem. Since DistributedFileSystem is tagged as LimitedPrivate we should expose the APIs through FileSystem for use by other applications....
http://issues.apache.org/jira/browse/HDFS-8345    Author: Arpit Agarwal, 2015-06-30, 23:35
[HDFS-8691] Cleanup BlockScanner initialization and add test for configuration contract - HDFS - [issue]
...The initialization of the BlockScanner can be simplified by moving out test hooks. Tests can be modified to use configuration only.Also we need an additional test case to verify the behavior...
http://issues.apache.org/jira/browse/HDFS-8691    Author: Arpit Agarwal, 2015-06-30, 06:51
[HDFS-8456] Ozone: Introduce STORAGE_CONTAINER_SERVICE as a new NodeType. - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-8456    Author: Arpit Agarwal, 2015-06-23, 23:02
[HDFS-7164] Feature documentation for HDFS-6581 - HDFS - [issue]
...Add feature documentation explaining use cases, how to configure RAM_DISK and API updates....
http://issues.apache.org/jira/browse/HDFS-7164    Author: Arpit Agarwal, 2015-06-21, 16:32
[HDFS-8192] Eviction should key off used locked memory instead of ram disk free space - HDFS - [issue]
...Eviction from RAM disk will be triggered when locked memory is insufficient RAM to allocate a new replica for writing.This is a follow up to HDFS-8157. We no longer need the threshold config...
http://issues.apache.org/jira/browse/HDFS-8192    Author: Arpit Agarwal, 2015-06-21, 16:32
[HDFS-8457] Ozone: Refactor FsDatasetSpi to pull up HDFS-agnostic functionality into parent interface - HDFS - [issue]
...FsDatasetSpi can be split up into HDFS-specific and HDFS-agnostic parts. The HDFS-specific parts can continue to be retained in FsDataSpi while those relating to volume management, block poo...
http://issues.apache.org/jira/browse/HDFS-8457    Author: Arpit Agarwal, 2015-06-20, 22:15
[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, 2015-06-17, 20:09
[HDFS-5741] BlockInfo#findDataNode can be removed - HDFS - [issue]
...NN now tracks replicas by storage, so BlockInfo#findDataNode can be replaced with BlockInfo#findStorageInfo.BlockManager#reportDiff is being fixed as part of HDFS-5483, this Jira is to fix t...
http://issues.apache.org/jira/browse/HDFS-5741    Author: Arpit Agarwal, 2015-06-17, 06:32
[HDFS-4769] TestPersistBlocks#testRestartDfs fails on Windows - HDFS - [issue]
...Exception details attached....
http://issues.apache.org/jira/browse/HDFS-4769    Author: Arpit Agarwal, 2015-06-17, 06:29
[HDFS-6934] Move checksum computation off the hot path when writing to RAM disk - HDFS - [issue]
...Since local RAM is considered reliable we can avoid writing checksums on the hot path when replicas are being written to a local RAM disk.The checksum can be computed by the lazy writer when...
http://issues.apache.org/jira/browse/HDFS-6934    Author: Arpit Agarwal, 2015-06-17, 04:33
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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