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[HDFS-7509] Avoid resolving path multiple times - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-7509    Author: Jing Zhao, 2014-12-17, 23:52
[HDFS-7535] Utilize Snapshot diff report for distcp - HDFS - [issue]
...Currently HDFS snapshot diff report can identify file/directory creation, deletion, rename and modification under a snapshottable directory. We can use the diff report for distcp between the...
http://issues.apache.org/jira/browse/HDFS-7535    Author: Jing Zhao, 2014-12-16, 20:47
[HDFS-7498] Simplify the logic in INodesInPath - HDFS - [issue]
...Currently we have relatively complicated logic in INodesInPath:1) It can contain null elements in its INode array, and in mkdirRecursively these null INodes are replaced with new directories...
http://issues.apache.org/jira/browse/HDFS-7498    Author: Jing Zhao, 2014-12-11, 03:06
[HDFS-7474] Avoid resolving path in FSPermissionChecker - HDFS - [issue]
...Currently for an typical namenode operation a path can be resolved multiple times. Usually the FSPermissionChecker first takes the path string as input and resolve the path before the real c...
http://issues.apache.org/jira/browse/HDFS-7474    Author: Jing Zhao, 2014-12-11, 03:05
[HDFS-7508] Clean up path resolving in FSNamesystem/FSDirectory - HDFS - [issue]
...There are several issues with our current path resolving process: For a single operation we may repeat resolving the same path Each operation needs to invoke multiple calls for path resolvin...
http://issues.apache.org/jira/browse/HDFS-7508    Author: Jing Zhao, 2014-12-11, 03:04
[HDFS-7296] HdfsConstants#MEMORY_STORAGE_POLICY_ID and HdfsConstants#MEMORY_STORAGE_POLICY_ID are missing in branch-2 - HDFS - [issue]
...When HDFS-6581 was merged to branch-2 and branch-2.6, HdfsConstants#MEMORY_STORAGE_POLICY_ID and HdfsConstants#HdfsConstants#MEMORY_STORAGE_POLICY_ID, which were defined in HDFS-7228, are mi...
http://issues.apache.org/jira/browse/HDFS-7296    Author: Jing Zhao, 2014-12-01, 03:11
[HDFS-4066] Fix compile warnings for libwebhdfs - HDFS - [issue]
...The compile of libwebhdfs still generates a bunch of warnings, which need to be fixed....
http://issues.apache.org/jira/browse/HDFS-4066    Author: Jing Zhao, 2014-12-01, 02:35
[HDFS-7388] Improve the log for HA failover - HDFS - [issue]
...Currently to debug an issue during the NN HA failover (with automatic failover setup), we usually need to check log from all the NN and ZKFC daemons to figure out what triggered the failover...
http://issues.apache.org/jira/browse/HDFS-7388    Author: Jing Zhao, 2014-11-10, 23:32
[HDFS-6385] Show when block deletion will start after NameNode startup in WebUI - HDFS - [issue]
...HDFS-6186 provides functionality to delay block deletion for a period of time after NameNode startup. Currently we only show the number of pending block deletions in WebUI. We should also sh...
http://issues.apache.org/jira/browse/HDFS-6385    Author: Jing Zhao, 2014-10-31, 15:15
[HDFS-7228] Add an SSD policy into the default BlockStoragePolicySuite - HDFS - [issue]
...Currently in the default BlockStoragePolicySuite, we've defined 4 storage policies: LAZY_PERSIST, HOT, WARM, and COLD. Since we have already defined the SSD storage type, it will be useful t...
http://issues.apache.org/jira/browse/HDFS-7228    Author: Jing Zhao, 2014-10-29, 06:44
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB