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[HDFS-5563] NFS gateway should commit the buffered data when read request comes after write to the same file - HDFS - [issue]
...HDFS write is asynchronous and data may not be available to read immediately after write.One of the main reason is that DFSClient doesn't flush data to DN until its local buffer is full.To w...
http://issues.apache.org/jira/browse/HDFS-5563    Author: Brandon Li, 2013-11-28, 13:40
[HDFS-5539] NFS gateway secuirty enhancement - HDFS - [issue]
...Currently, NFS gateway only supports AUTH_UNIX RPC authentication. AUTH_UNIX is easy to deploy and use but lack of strong security support. This JIRA is to track the effort of NFS gateway se...
http://issues.apache.org/jira/browse/HDFS-5539    Author: Brandon Li, 2013-11-21, 02:04
[HDFS-5469] Add configuration property for the sub-directroy export path - HDFS - [issue]
...Currently only HDFS root is exported. Adding this property is the first step to support sub-directory mounting....
http://issues.apache.org/jira/browse/HDFS-5469    Author: Brandon Li, 2013-11-18, 18:49
[HDFS-5364] Add OpenFileCtx cache - HDFS - [issue]
...NFS gateway can run out of memory when the stream timeout is set to a relatively long period(e.g., >1 minute) and user uploads thousands of files in parallel.  Each stream DFSClient ...
http://issues.apache.org/jira/browse/HDFS-5364    Author: Brandon Li, 2013-11-08, 19:36
[HDFS-5172] Handle race condition for writes - HDFS - [issue]
...When an unstable write arrives, the following happens: 1. retrieves the OpenFileCtx2. create asyn task to write it to hdfsThe race is that, the OpenFileCtx could be closed by the StreamMonit...
http://issues.apache.org/jira/browse/HDFS-5172    Author: Brandon Li, 2013-11-08, 19:36
[HDFS-5252] Stable write is not handled correctly in someplace - HDFS - [issue]
...When the client asks for a stable write but the prerequisite writes are not transferred to NFS gateway, the stableness can't be honored. NFS gateway has to treat the write as unstable write ...
http://issues.apache.org/jira/browse/HDFS-5252    Author: Brandon Li, 2013-11-08, 13:36
[HDFS-5171] NFS should create input stream for a file and try to share it with multiple read requests - HDFS - [issue]
...Currently, NFS creates an input steam for each read request and closes it after the request is served. With lots of read request, the overhead is significant. Like for write request, NFS sho...
http://issues.apache.org/jira/browse/HDFS-5171    Author: Brandon Li, 2013-10-25, 15:10
[HDFS-5330] fix readdir and readdirplus for large directories - HDFS - [issue]
...These two calls need to use cookies to do multiple round trips to namenode to get the complete list of the dirents. Currently implementation passes an inode path as "startAfter" for listPath...
http://issues.apache.org/jira/browse/HDFS-5330    Author: Brandon Li, 2013-10-15, 22:37
[HDFS-5337] should do hsync for a commit request even there is no pending writes - HDFS - [issue]
...HDFS-5281 introduced a regression that hsync is not executed when a commit request arrives with no pending writes for the same file. This JIRA is to track the fix....
http://issues.apache.org/jira/browse/HDFS-5337    Author: Brandon Li, 2013-10-10, 15:19
[HDFS-5281] COMMIT request should not block - HDFS - [issue]
...Currently Commit request is handled synchronously, blocked at most 30 seconds before timeout. This JIRA is to make is asynchronous and thus it won't block other requests coming from the same...
http://issues.apache.org/jira/browse/HDFS-5281    Author: Brandon Li, 2013-10-09, 14:34
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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