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[HDFS-8665] Fix replication check in DFSTestUtils#waitForReplication - HDFS - [issue]
...The check looks at the repl factor set on the file rather than reported # of replica locations. Let's do the latter....
http://issues.apache.org/jira/browse/HDFS-8665    Author: Andrew Wang, 2015-07-24, 19:28
[HDFS-3811] TestPersistBlocks#TestRestartDfsWithFlush appears to be flaky - HDFS - [issue]
...This test failed on a recent Jenkins build, but passes for me locally. Seems flaky.See:https://builds.apache.org/job/PreCommit-HDFS-Build/3021//testReport/org.apache.hadoop.hdfs/TestPersistB...
http://issues.apache.org/jira/browse/HDFS-3811    Author: Andrew Wang, 2015-07-20, 19:48
[HDFS-7165] Separate block metrics for files with replication count 1 - HDFS - [issue]
...We see a lot of escalations because someone has written teragen output with a replication factor of 1, a DN goes down, and a bunch of missing blocks show up. These are normally false positiv...
http://issues.apache.org/jira/browse/HDFS-7165    Author: Andrew Wang, 2015-07-09, 20:19
[HDFS-8681] BlockScanner is incorrectly disabled by default - HDFS - [issue]
...This code is used to check whether the block scanner is enabled:  public boolean isEnabled() {    return (conf.scanPeriodMs) > 0 && (conf.targetBytesPerSe...
http://issues.apache.org/jira/browse/HDFS-8681    Author: Andrew Wang, 2015-07-07, 22:47
[HDFS-8709] Clarify automatic sync in FSEditLog#logEdit - HDFS - [issue]
...The code flow and comments regarding the logSync() in logEdit() is a little messy, could be improved....
http://issues.apache.org/jira/browse/HDFS-8709    Author: Andrew Wang, 2015-07-04, 17:37
[HDFS-8713] Convert DatanodeDescriptor to use SLF4J logging - HDFS - [issue]
...Let's convert this class to use SLF4J...
http://issues.apache.org/jira/browse/HDFS-8713    Author: Andrew Wang, 2015-07-02, 21:26
[HDFS-5630] Hook up cache directive and pool usage statistics - HDFS - [issue]
...Right now we have stubs for bytes/files statistics for cache pools, but we need to hook them up so they're actually being tracked.This is a pre-requisite for enforcing per-pool quotas....
http://issues.apache.org/jira/browse/HDFS-5630    Author: Andrew Wang, 2015-06-30, 08:25
[HDFS-8538] Change the default volume choosing policy to AvailableSpaceVolumeChoosingPolicy - HDFS - [issue]
...For datanodes with different sized disks, they almost always want the available space policy. Users with homogenous disks are unaffected.Since this code has baked for a while, let's change i...
http://issues.apache.org/jira/browse/HDFS-8538    Author: Andrew Wang, 2015-06-29, 19:39
[HDFS-8656] Preserve compatibility of ClientProtocol#rollingUpgrade after finalization - HDFS - [issue]
...HDFS-7645 changed rollingUpgradeInfo to still return an RUInfo after finalization, so the DNs can differentiate between rollback and a finalization. However, this breaks compatibility for th...
http://issues.apache.org/jira/browse/HDFS-8656    Author: Andrew Wang, 2015-06-27, 16:39
[HDFS-8546] Use try with resources in DataStorage and Storage - HDFS - [issue]
...We have some old-style try/finally to close files in DataStorage and Storage, let's update them.Also a few small cleanups: Actually check that tryLock returns a FileLock in isPreUpgradableLa...
http://issues.apache.org/jira/browse/HDFS-8546    Author: Andrew Wang, 2015-06-26, 15:35
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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