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[HDFS-7847] Modify NNThroughputBenchmark to be able to operate on a remote NameNode - HDFS - [issue]
...Modify NNThroughputBenchmark to be able to operate on a NN that is not in process. A followon Jira will modify it some more to allow quantifying native and java heap sizes, and some latency ...
http://issues.apache.org/jira/browse/HDFS-7847    Author: Colin Patrick McCabe, 2015-05-06, 17:56
[HDFS-8305] HDFS INotify: the destination field of RenameOp should always end with the file name - HDFS - [issue]
...HDFS INotify: the destination field of RenameOp should always end with the file name rather than sometimes being a directory name.  Previously, in some cases when using the old rename, ...
http://issues.apache.org/jira/browse/HDFS-8305    Author: Colin Patrick McCabe, 2015-05-06, 17:56
[HDFS-7041] add a library that can forward libhdfs calls to any other library implementation - HDFS - [issue]
...Since we have added libwebhdfs, and are in the process of adding another library for to speak the native HDFS protocol, it would be helpful to have a "forwarding" library that could load dif...
http://issues.apache.org/jira/browse/HDFS-7041    Author: Colin Patrick McCabe, 2015-05-04, 03:31
[HDFS-6984] In Hadoop 3, make FileStatus no longer a Writable - HDFS - [issue]
...FileStatus was a Writable in Hadoop 2 and earlier.  Originally, we used this to serialize it and send it over the wire.  But in Hadoop 2 and later, we have the protobuf HdfsFileSta...
http://issues.apache.org/jira/browse/HDFS-6984    Author: Colin Patrick McCabe, 2015-05-03, 20:40
[HDFS-3592] libhdfs should use ClientProtocol::rename2 - HDFS - [issue]
...It would be nice if libhdfs exposed rename2.  This version of rename is much more verbose about any errors that occur-- it throws AccessControlException, FileAlreadyExists, FileNotFound...
http://issues.apache.org/jira/browse/HDFS-3592    Author: Colin Patrick McCabe, 2015-05-03, 14:22
[HDFS-5546] race condition crashes "hadoop ls -R" when directories are moved/removed - HDFS - [issue]
...This seems to be a rare race condition where we have a sequence of events like this:1. org.apache.hadoop.shell.Ls calls DFS#getFileStatus on directory D.2. someone deletes or moves directory...
http://issues.apache.org/jira/browse/HDFS-5546    Author: Colin Patrick McCabe, 2015-05-02, 10:56
[HDFS-7923] The DataNodes should rate-limit their full block reports by asking the NN on heartbeat messages - HDFS - [issue]
...The DataNodes should rate-limit their full block reports.  They can do this by first sending a heartbeat message to the NN with an optional boolean set which requests permission to send...
http://issues.apache.org/jira/browse/HDFS-7923    Author: Colin Patrick McCabe, 2015-04-30, 00:35
[HDFS-7915] The DataNode can sometimes allocate a ShortCircuitShm slot and fail to tell the DFSClient about it because of a network error - HDFS - [issue]
...The DataNode can sometimes allocate a ShortCircuitShm slot and fail to tell the DFSClient about it because of a network error.  In DataXceiver#requestShortCircuitFds, the DataNode can s...
http://issues.apache.org/jira/browse/HDFS-7915    Author: Colin Patrick McCabe, 2015-04-24, 14:42
[HDFS-8088] Reduce the number of HTrace spans generated by HDFS reads - HDFS - [issue]
...HDFS generates too many trace spans on read right now.  Every call to read() we make generates its own span, which is not very practical for things like HBase or Accumulo that do many s...
http://issues.apache.org/jira/browse/HDFS-8088    Author: Colin Patrick McCabe, 2015-04-16, 21:19
[HDFS-7054] Make DFSOutputStream tracing more fine-grained - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-7054    Author: Colin Patrick McCabe, 2015-04-10, 21:30
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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