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[HDFS-7514] TestTextCommand fails on Windows - HDFS - [issue]
...TestTextCommand fails on WindowsError MessagePathname /D:/w/hbk/hadoop-hdfs-project/hadoop-hdfs/target/test/data/testText/weather.avro from D:/w/hbk/hadoop-hdfs-project/hadoop-hdfs/target/te...
http://issues.apache.org/jira/browse/HDFS-7514    Author: Arpit Agarwal, 2014-12-13, 15:25
[HDFS-5960] Fix TestRollingUpgrade - HDFS - [issue]
...TestRollingUpgrade fails when restarting the NN because OP_ROLLING_UPGRADE_START and OP_ROLLING_UPGRADE_FINALIZE are not expected.The fix is to start/finalize rolling upgrade when the corres...
http://issues.apache.org/jira/browse/HDFS-5960    Author: Arpit Agarwal, 2014-12-05, 02:13
[HDFS-4961] BlockId and Generation Stamp code should be moved to the blockmanagement package - HDFS - [issue]
...While reviewing the fix for HDFS-4645, Nicholas mentioned    The block id and generation stamp code actually should be moved to the blockmanagement package. See if you want to...
http://issues.apache.org/jira/browse/HDFS-4961    Author: Arpit Agarwal, 2014-11-13, 21:51
[HDFS-7093] Add config key to restrict setStoragePolicy - HDFS - [issue]
...Currently we do not allow unprivileged users to set the storage policy on a directory. This Jira proposes removing this restriction....
http://issues.apache.org/jira/browse/HDFS-7093    Author: Arpit Agarwal, 2014-11-01, 23:53
[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, 2014-10-28, 14:21
[HDFS-6988] Add configurable limit for percentage-based eviction threshold - HDFS - [issue]
...Per feedback from Colin Patrick McCabe on HDFS-6930, we can make the eviction thresholds configurable. The hard-coded thresholds may not be appropriate for very large RAM disks....
http://issues.apache.org/jira/browse/HDFS-6988    Author: Arpit Agarwal, 2014-10-23, 03:00
[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, 2014-10-22, 16:11
[HDFS-7112] LazyWriter should use either async IO or one thread per physical disk - HDFS - [issue]
...The LazyWriter currently uses synchronous IO and a single thread. This limits the throughput to that of a single disk. Using either async overlapped IO or one thread per physical disk will i...
http://issues.apache.org/jira/browse/HDFS-7112    Author: Arpit Agarwal, 2014-10-18, 03:05
[HDFS-7090] Use unbuffered writes when persisting in-memory replicas - HDFS - [issue]
...The LazyWriter thread just uses FileUtils.copyFile to copy block files to persistent storage. It would be better to use unbuffered writes to avoid churning page cache....
http://issues.apache.org/jira/browse/HDFS-7090    Author: Arpit Agarwal, 2014-10-18, 03:04
[HDFS-7171] Fix Jenkins failures in HDFS-6581 branch - HDFS - [issue]
...Jenkins flagged a few failures with the latest merge patch.Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/8269//testReport/Findbugs warnings: https://builds.apache.org/job/...
http://issues.apache.org/jira/browse/HDFS-7171    Author: Arpit Agarwal, 2014-10-18, 03:04
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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