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[HDFS-9541] Add hdfsStreamBuilder API to libhdfs to support defaultBlockSizes greater than 2 GB - HDFS - [issue]
...We should have a new API in libhdfs which will support creating files with a default block size that is more than 31 bits in size.  We should also make this a builder API so that it is ...
http://issues.apache.org/jira/browse/HDFS-9541    Author: Colin Patrick McCabe, 2016-01-29, 23:50
[HDFS-7694] FSDataInputStream should support "unbuffer" - HDFS - [issue]
...For applications that have many open HDFS (or other Hadoop filesystem) files, it would be useful to have an API to clear readahead buffers and sockets.  This could be added to the exist...
http://issues.apache.org/jira/browse/HDFS-7694    Author: Colin Patrick McCabe, 2016-01-27, 16:41
[HDFS-9674] The HTrace span for OpWriteBlock should record the maxWriteToDisk time - HDFS - [issue]
...The HTrace span for OpWriteBlock should record the maxWriteToDisk time.  That way, if the trace span is long, we can figure out whether it is because of a hard disk or I/O issue, or som...
http://issues.apache.org/jira/browse/HDFS-9674    Author: Colin Patrick McCabe, 2016-01-22, 19:02
[HDFS-6984] In Hadoop 3, make FileStatus serialize itself via protobuf - 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, 2016-01-16, 01:32
[HDFS-3290] Use a better local directory layout for the datanode - HDFS - [issue]
...When the HDFS DataNode stores chunks in a local directory, it currently puts all of the chunk files into either one big directory, or a collection of directories.  However, there is no ...
http://issues.apache.org/jira/browse/HDFS-3290    Author: Colin Patrick McCabe, 2016-01-15, 23:08
[HDFS-9589] Block files which have been hardlinked should be duplicated before the DataNode appends to the them - HDFS - [issue]
...Block files which have been hardlinked should be duplicated before the DataNode appends to the them.  The patch for HDFS-8860 accidentally removed this code....
http://issues.apache.org/jira/browse/HDFS-9589    Author: Colin Patrick McCabe, 2015-12-22, 17:51
[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, 2015-12-14, 18:09
[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, 2015-12-03, 19:03
[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, 2015-11-25, 02:36
[HDFS-9307] fuseConnect should be private to fuse_connect.c - HDFS - [issue]
...fuseConnect should be private to fuse_connect.c, since it's not used outside that file...
http://issues.apache.org/jira/browse/HDFS-9307    Author: Colin Patrick McCabe, 2015-10-27, 20:24
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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