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[HDFS-4966] implement advisory caching for RawLocalFilesystem - HDFS - [issue]
...It should be pretty straightforward to implement the advisory caching tunables (dropBehind, readahead) introduced in HDFS-4817 for RawLocalFilesystem....
http://issues.apache.org/jira/browse/HDFS-4966    Author: Colin Patrick McCabe, 2013-07-09, 02:00
[HDFS-3651] optionally, the NameNode should invoke saveNamespace after getting a SIGTERM - HDFS - [issue]
...It would be nice if the NameNode could be configured so that it did a saveNamespace and then shut down cleanly after receiving a SIGTERM signal.  In general, it is a good practice to ca...
http://issues.apache.org/jira/browse/HDFS-3651    Author: Colin Patrick McCabe, 2013-06-20, 18:03
[HDFS-4160] libhdfs / fuse-dfs should implement O_CREAT | O_EXCL - HDFS - [issue]
...hdfsOpenFile contains this code:if ((flags & O_CREAT) && (flags & O_EXCL)) {                            ...
http://issues.apache.org/jira/browse/HDFS-4160    Author: Colin Patrick McCabe, 2013-05-29, 19:45
[HDFS-4698] provide client-side metrics for remote reads, local reads, and short-circuit reads - HDFS - [issue]
...We should provide metrics to let clients know how many bytes of data they have read remotely, versus locally or via short-circuit local reads.  This will allow clients to know how well ...
http://issues.apache.org/jira/browse/HDFS-4698    Author: Colin Patrick McCabe, 2013-05-25, 16:06
[HDFS-4428] FsDatasetImpl should disclose what the error is when a rename fails - HDFS - [issue]
...It would be nice if FsDatasetImpl would print out an error message when a rename fails, describing what went wrong.  This would make it a lot easier to investigate and resolve test fail...
http://issues.apache.org/jira/browse/HDFS-4428    Author: Colin Patrick McCabe, 2013-05-22, 03:53
[HDFS-3638] backport HDFS-3568 (add security to fuse_dfs) to branch-1 - HDFS - [issue]
...Backport HDFS-3568 to branch-1.  This will give fuse_dfs support for Kerberos authentication, allowing FUSE to be used in a secure cluster....
http://issues.apache.org/jira/browse/HDFS-3638    Author: Colin Patrick McCabe, 2013-05-14, 06:12
[HDFS-4352] Encapsulate arguments to BlockReaderFactory in a class - HDFS - [issue]
...Encapsulate the arguments to BlockReaderFactory in a class to avoid having to pass around 10+ arguments to a few different functions....
http://issues.apache.org/jira/browse/HDFS-4352    Author: Colin Patrick McCabe, 2013-05-10, 23:51
[HDFS-4661] fix various bugs in short circuit read - HDFS - [issue]
...For the log statement in DataXceiver below, it has two String.format(..); it uses %s for string constants.BlockSender.ClientTraceLog.info(String.format(         &...
http://issues.apache.org/jira/browse/HDFS-4661    Author: Colin Patrick McCabe, 2013-05-10, 15:06
[HDFS-4812] add hdfsReadFully, hdfsWriteFully - HDFS - [issue]
...It would be nice to have hdfsReadFully and hdfsWriteFully in libhdfs.  The current APIs don't guarantee that we read or write as much as we're told to do.  We have readFully and wr...
http://issues.apache.org/jira/browse/HDFS-4812    Author: Colin Patrick McCabe, 2013-05-10, 03:17
[HDFS-3596] Improve FSEditLog pre-allocation in branch-1 - HDFS - [issue]
...Implement HDFS-3510 in branch-1.  This will improve FSEditLog preallocation to decrease the incidence of corrupted logs after disk full conditions.  (See HDFS-3510 for a longer des...
http://issues.apache.org/jira/browse/HDFS-3596    Author: Colin Patrick McCabe, 2013-05-02, 22:52
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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