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[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. ...
, 2016-10-03, 14:10
[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...
, 2016-09-30, 14:21
[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-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-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
[HDFS-10772] Reduce byte/string conversions for get listing
...FSDirectory.getListingInt does a byte/string conversion for the byte startAfter just to determine if it should be resolved as an inode path. This is not the common case but rather fo...
, 2016-09-02, 17:33
[HDFS-10768] Optimize mkdir ops
...Directory creation causes excessive object allocation: ex. an immutable list builder, containing the string of components converted from the IIP's bytes, sublist views of the string list, ...
, 2016-09-02, 17:29
[HDFS-10711] Optimize FSPermissionChecker group membership check
...HADOOP-13442 obviates the need for multiple group related object allocations....
, 2016-09-02, 16:26
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