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[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...
, 2016-10-06, 17:03
[HDFS-10956] Remove rename/delete performance penalty when not using snapshots
...When deleting or renaming directories, the entire subtree(s) is scanned for snapshottable directories. The performance penalty may become very expensive for dense trees. The snap...
, 2016-10-04, 20:30
[HDFS-10940] Reduce performance penalty of block caching when not used
...For every block location generated, the CacheManager will create a junk object for a hash lookup of cached locations. If there are no cached blocks, none of this is required....
, 2016-10-03, 17:01
[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
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