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[HDFS-5366] recaching improvements - HDFS - [issue]
...There are a few things about our HDFS-4949 recaching strategy that could be improved. We should monitor the DN's maximum and current mlock'ed memory consumption levels, so that we don't ask ...
http://issues.apache.org/jira/browse/HDFS-5366    Author: Colin Patrick McCabe, 2013-11-15, 19:10
[HDFS-5450] better API for getting the cached blocks locations - HDFS - [issue]
...Currently, we have to downcast the BlockLocation to HdfsBlockLocation to get information about whether a replica is cached.  We should have this information in BlockLocation instead....
http://issues.apache.org/jira/browse/HDFS-5450    Author: Colin Patrick McCabe, 2013-11-13, 13:47
[HDFS-5485] add command-line support for modifyDirective - HDFS - [issue]
...add command-line support for modifyDirective...
http://issues.apache.org/jira/browse/HDFS-5485    Author: Colin Patrick McCabe, 2013-11-13, 13:47
[HDFS-5326] add modifyDirective to cacheAdmin - HDFS - [issue]
...We should add a way of modifying cache directives on the command-line, similar to how modifyCachePool works....
http://issues.apache.org/jira/browse/HDFS-5326    Author: Colin Patrick McCabe, 2013-11-09, 06:32
[HDFS-5394] fix race conditions in DN caching and uncaching - HDFS - [issue]
...The DN needs to handle situations where it is asked to cache the same replica more than once.  (Currently, it can actually do two mmaps and mlocks.)  It also needs to handle the si...
http://issues.apache.org/jira/browse/HDFS-5394    Author: Colin Patrick McCabe, 2013-11-08, 13:36
[HDFS-5166] caching PB cleanups - HDFS - [issue]
...Once we have a better idea of what we need in the RPCs, let's do some protobuf cleanups on the caching RPCs.  We may want to factor some fields out into a common type, for example....
http://issues.apache.org/jira/browse/HDFS-5166    Author: Colin Patrick McCabe, 2013-11-07, 22:08
[HDFS-5459] fix bootstrapStandby race condition introduced in HDFS-5080 - HDFS - [issue]
...In HDFS-5080, we added the ability to fetch the in-progress edit log from JournalNodes.  However, in some cases, BootstrapStandby can now fetch entries that have not made it to a quorum...
http://issues.apache.org/jira/browse/HDFS-5459    Author: Colin Patrick McCabe, 2013-11-05, 01:00
[HDFS-5400] DFS_CLIENT_MMAP_CACHE_THREAD_RUNS_PER_TIMEOUT constant is set to the wrong value - HDFS - [issue]
...DFS_CLIENT_MMAP_CACHE_THREAD_RUNS_PER_TIMEOUT is set to the wrong value.  It should be set to dfs.client.mmap.cache.thread.runs.per.timeout, but instead it is set to dfs.client.mmap.cac...
http://issues.apache.org/jira/browse/HDFS-5400    Author: Colin Patrick McCabe, 2013-10-23, 15:05
[HDFS-5378] In CacheReport, don't send genstamp and length on the wire - HDFS - [issue]
...As discussed in HDFS-5096, we don't need genstamp and block length when processing cache reports.  So let's not send them over the wire (it increases the size of cache reports to 3x wha...
http://issues.apache.org/jira/browse/HDFS-5378    Author: Colin Patrick McCabe, 2013-10-21, 20:30
[HDFS-5397] TestDecommission.testClusterStatsFederation failed with ConcurrentModificationException - HDFS - [issue]
...It seems like FsVolumeImpl#bpSlices is currently accessed and modified concurrently with no synchronization.See this todo:  void checkDirs() throws DiskErrorException {  ...
http://issues.apache.org/jira/browse/HDFS-5397    Author: Colin Patrick McCabe, 2013-10-21, 18:05
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