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[HDFS-6782] Improve FS editlog logSync - HDFS - [issue]
...In NN, it uses a double buffer (bufCurrent, bufReady) for log sync, bufCurrent it to buffer new coming edit ops and bufReady is for flushing. This's efficient. When flush is ongoing, and buf...
http://issues.apache.org/jira/browse/HDFS-6782    Author: Yi Liu, 2014-08-07, 17:26
[HDFS-6817] Fix findbugs and other warnings - HDFS - [issue]
...We need to fix the findbugs and other warnings before merge....
http://issues.apache.org/jira/browse/HDFS-6817    Author: Yi Liu, 2014-08-06, 05:45
[HDFS-6813] WebHdfsFileSystem#OffsetUrlInputStream should implement PositionedReadable with thead-safe. - HDFS - [issue]
...PositionedReadable definition requires the implementations for its interfaces should be thread-safe.OffsetUrlInputStream(WebHdfsFileSystem inputstream) doesn't implement these interfaces wit...
http://issues.apache.org/jira/browse/HDFS-6813    Author: Yi Liu, 2014-08-05, 17:03
[HDFS-6787] Remove duplicate code in FSDirectory#unprotectedConcat - HDFS - [issue]
...// update inodeMapremoveFromInodeMap(Arrays.asList(allSrcInodes));this snippet of code is duplicate, since we already have the logic above it:    for(INodeFile nodeToRemove: a...
http://issues.apache.org/jira/browse/HDFS-6787    Author: Yi Liu, 2014-08-05, 14:23
[HDFS-6537] Tests for Crypto filesystem decorating HDFS - HDFS - [issue]
...CryptoFileSystem targets other filesystem. But currently other built-in Hadoop filesystems don't have XAttrs support, so this JIRA uses HDFS for test....
http://issues.apache.org/jira/browse/HDFS-6537    Author: Yi Liu, 2014-08-05, 01:14
[HDFS-6786] Fix potential issue of cache refresh interval - HDFS - [issue]
...In CacheReplicationMonitor, following code is try to check whether needs to rescan every interval ms, if rescan takes n ms, then subtract n ms for the interval. But if the delta <=0, it b...
http://issues.apache.org/jira/browse/HDFS-6786    Author: Yi Liu, 2014-08-01, 08:48
[HDFS-6724] Decrypt EDEK before creating CryptoInputStream/CryptoOutputStream - HDFS - [issue]
...In DFSClient, we need to decrypt EDEK before creating CryptoInputStream/CryptoOutputStream, currently edek is used directly....
http://issues.apache.org/jira/browse/HDFS-6724    Author: Yi Liu, 2014-07-25, 19:33
[HDFS-6720] Remove KeyProvider in EncryptionZoneManager - HDFS - [issue]
...We don't need KeyProvider in EncryptionZoneManager any more, so we need to remove KeyProvider variable in class and KeyProvider parameter for EncryptionZoneManager#createEncryptionZone...
http://issues.apache.org/jira/browse/HDFS-6720    Author: Yi Liu, 2014-07-22, 18:57
[HDFS-6405] Test Crypto streams in HDFS - HDFS - [issue]
...Test file write/read, syncable, positioned read, seek and others for Crypto streams....
http://issues.apache.org/jira/browse/HDFS-6405    Author: Yi Liu, 2014-07-16, 20:04
[HDFS-6615] Replace java.security.SecureRandom with org.apache.hadoop.crypto.random.SecureRandom in HDFS - HDFS - [issue]
...In java, SecureRandom is slow and is pseudo random bytes.In HADOOP-10734, we implement true secure random using hardware random number generator, it has high performance about 22x speedup. I...
http://issues.apache.org/jira/browse/HDFS-6615    Author: Yi Liu, 2014-07-01, 14:59
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