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[HDFS-7243] HDFS concat operation should not be allowed in Encryption Zone - HDFS - [issue]
...For HDFS encryption at rest, files in an encryption zone are using different data encryption keys, so concat should be disallowed....
http://issues.apache.org/jira/browse/HDFS-7243    Author: Yi Liu, 2014-10-22, 02:00
[HDFS-7271] Find a way to make encryption zone deletion work with HDFS trash. - HDFS - [issue]
...Currently when HDFS trash is enabled, deletion of encryption zone will have issue:rmr: Failed to move to trash: ... can't be moved from an encryption zone.A simple way is to add ignore trash...
http://issues.apache.org/jira/browse/HDFS-7271    Author: Yi Liu, 2014-10-21, 04:51
[HDFS-7252] small refinement to the use of isInAnEZ in FSNamesystem - HDFS - [issue]
...In FSN#startFileInt, EncryptionZoneManager#getEncryptionZoneForPath is invoked 3 times (dir.isInAnEZ(iip), dir.getEZForPath(iip), dir.getKeyName(iip)) in following code, actually we just nee...
http://issues.apache.org/jira/browse/HDFS-7252    Author: Yi Liu, 2014-10-18, 14:58
[HDFS-7242] Code improvement for FSN#checkUnreadableBySuperuser - HDFS - [issue]
...checkUnreadableBySuperuser is to check whether super user can access specific path. The code logic is not efficient. It does iteration check for all user, actually we just need to check supe...
http://issues.apache.org/jira/browse/HDFS-7242    Author: Yi Liu, 2014-10-18, 14:58
[HDFS-6606] Optimize HDFS Encrypted Transport performance - HDFS - [issue]
...In HDFS-3637, Aaron T. Myers added support for encrypting the DataTransferProtocol, it was a great work.It utilizes SASL Digest-MD5 mechanism (use Qop: auth-conf),  it supports three se...
http://issues.apache.org/jira/browse/HDFS-6606    Author: Yi Liu, 2014-09-06, 00:13
[HDFS-6886] Use single editlog record for creating file + overwrite. - HDFS - [issue]
...As discussed in HDFS-6871, as Jing Zhao and Colin Patrick McCabe's suggestion, we could do further improvement to use one editlog record for creating file + overwrite in this JIRA. We could ...
http://issues.apache.org/jira/browse/HDFS-6886    Author: Yi Liu, 2014-09-05, 14:48
[HDFS-6871] Improve NameNode performance when creating file   - HDFS - [issue]
...Creating file with overwrite flag will cause NN fall into flush edit logs and block other requests if the file exists.When we create a file with overwrite flag (default is true) in HDFS, NN ...
http://issues.apache.org/jira/browse/HDFS-6871    Author: Yi Liu, 2014-09-05, 03:41
[HDFS-6367] EnumSetParam$Domain#parse fails for parameter containing more than one enum. - HDFS - [issue]
...Fails because additional "," ----------------------------------------------------------------java.lang.IllegalArgumentException: No enum const class org.apache.hadoop.fs.Options$Rename.,OVER...
http://issues.apache.org/jira/browse/HDFS-6367    Author: Yi Liu, 2014-09-03, 21:34
[HDFS-6901] Remove unnecessary CryptoCodec and KeyProvider.Options definition in FSNamesystem - HDFS - [issue]
...CryptoCodec and KeyProvider.Options are not necessary in FSN....
http://issues.apache.org/jira/browse/HDFS-6901    Author: Yi Liu, 2014-08-28, 02:50
[HDFS-6870] Blocks and INodes could leak for Rename with overwrite flag - HDFS - [issue]
...Following code in FSDirectory#unprotectedRenameTo doesn't collect blocks and INodes for non snapshot path.        if (removedDst != null) {      ...
http://issues.apache.org/jira/browse/HDFS-6870    Author: Yi Liu, 2014-08-21, 20:44
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