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[HDFS-10850] getEZForPath should NOT throw FNF
...HDFS-9433 made an incompatible change to the semantics of getEZForPath. It used to return the EZ of the closest ancestor path. It never threw FNF. A common use of getEZForP...
, 2016-09-29, 21:23
[HDFS-10779] Rename does not need to re-solve destination
...Rename uses FSDirectory.isDir(String) to determine if the destination is a directory. This dissect the path, creates an IIP, checks if the last inode is a directory. The rename o...
, 2016-09-28, 23:17
[HDFS-10851] FSDirStatAndListingOp: stop passing path as string
...Path strings should be resolved once into INodesInPath. The IIP should be used extensively from that point forward. ...
, 2016-09-26, 17:58
[HDFS-10745] Directly resolve paths into INodesInPath
...The intermediate resolution to a string, only to be decomposed by INodesInPath back into a byte can be eliminated by resolving directly to an IIP. The IIP will contain the resolved...
, 2016-09-24, 03:50
[HDFS-10662] Optimize UTF8 string/byte conversions
...String/byte conversions may take either a Charset instance or its canonical name. One might think a Charset instance would be faster due to avoiding a lookup and instantiation of a Cha...
, 2016-09-20, 08:33
[HDFS-10744] Internally optimize path component resolution
...FSDirectory's path resolution currently uses a mixture of string & byte conversions, back to string, back to byte for INodesInPath. Internally all path component reso...
, 2016-09-14, 05:11
[HDFS-10673] Optimize FSPermissionChecker's internal path usage
...The INodeAttributeProvider and AccessControlEnforcer features degrade performance and generate excessive garbage even when neither is used. Main issues: A byte of components is unn...
, 2016-09-12, 23:12
[HDFS-10789] Route webhdfs through the RPC call queue
...Webhdfs is extremely expensive under load and is not subject to the QoS benefits of the RPC call queue. HADOOP-13537 provides the basis for routing webhdfs through the call queue to pr...
, 2016-09-09, 20:49
[HDFS-6220] Webhdfs should differentiate remote exceptions
...Webhdfs's validateResponse should use a distinct exception for json decoded exceptions than it does for servlet exceptions. Ex. A servlet generated 404 with a json payload should be di...
, 2016-09-05, 16:49
[HDFS-10762] Pass IIP for file status related methods
...The frequently called file status methods will not require path re-resolves if the IIP is passed down the call stack. The code can be simplified further if the IIP tracks if the origin...
, 2016-09-02, 18:07
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