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[HDFS-7864] Erasure Coding: Update safemode calculation for striped blocks - HDFS - [issue]
...We need to update the safemode calculation for striped blocks. Specifically, each striped block now consists of multiple data/parity blocks stored in corresponding DataNodes. The current cod...
http://issues.apache.org/jira/browse/HDFS-7864    Author: Jing Zhao, 2015-03-23, 22:09
[HDFS-7829] Code clean up for LocatedBlock - HDFS - [issue]
...We can do some code cleanup for LocatedBlock, including: Using a simple Builder pattern to avoid multiple constructors Setting data fields like corrupt and offset to final...
http://issues.apache.org/jira/browse/HDFS-7829    Author: Jing Zhao, 2015-03-23, 00:57
[HDFS-7957] Truncate should verify quota before making changes - HDFS - [issue]
...This is a similar issue with HDFS-7587: for truncate we should also verify quota in the beginning and update quota in the end....
http://issues.apache.org/jira/browse/HDFS-7957    Author: Jing Zhao, 2015-03-21, 15:12
[HDFS-7943] Append cannot handle the last block with length greater than the preferred block size - HDFS - [issue]
...In HDFS-3689, we remove the restriction from concat that all the source files should have the same preferred block size with the target file. This can cause a file to contain blocks with siz...
http://issues.apache.org/jira/browse/HDFS-7943    Author: Jing Zhao, 2015-03-19, 15:23
[HDFS-7912] Erasure Coding: track BlockInfo instead of Block in UnderReplicatedBlocks and PendingReplicationBlocks - HDFS - [issue]
...Now with striped blocks and the design that uses a single BlockInfoStriped object to track all the corresponding blocks, we need to clearly distinguish the type Block and BlockInfo in BlockM...
http://issues.apache.org/jira/browse/HDFS-7912    Author: Jing Zhao, 2015-03-17, 17:19
[HDFS-7826] Erasure Coding: Update INodeFile quota computation for striped blocks - HDFS - [issue]
...Currently INodeFile's quota computation only considers contiguous blocks (i.e., INodeFile#blocks). We need to update it to support striped blocks....
http://issues.apache.org/jira/browse/HDFS-7826    Author: Jing Zhao, 2015-03-16, 23:42
[HDFS-7837] Erasure Coding: allocate and persist striped blocks in NameNode - HDFS - [issue]
...Try to finish the remaining work from HDFS-7339 (except the ClientProtocol/DFSClient part): Allow FSNamesystem#getAdditionalBlock to create striped blocks and persist striped blocks to editl...
http://issues.apache.org/jira/browse/HDFS-7837    Author: Jing Zhao, 2015-03-16, 20:20
[HDFS-7905] Refactor the checking the minimum replication logic in BlockManager - HDFS - [issue]
...This is some refactoring separated from the HDFS-7285 branch. In the current BlockManager, the "checking the minimum replication" code is repeated in several places. It will be better to wra...
http://issues.apache.org/jira/browse/HDFS-7905    Author: Jing Zhao, 2015-03-09, 20:30
[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, 2015-03-05, 15:50
[HDFS-7871] NameNodeEditLogRoller can keep printing "Swallowing exception" message - HDFS - [issue]
...In one of our customer's cluster, we saw the NameNode kept printing out the following error msg and thus got stuck for several minutes:ERROR org.apache.hadoop.hdfs.server.namenode.FSNamesyst...
http://issues.apache.org/jira/browse/HDFS-7871    Author: Jing Zhao, 2015-03-03, 19:10
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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