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[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
[HDFS-7131] During HA upgrade, JournalNode should create a new committedTxnId file in the current directory - HDFS - [issue]
...Currently while doing HA upgrade, we do not create a new committedTxnId file    in the new current directory of JournalNode. And before we have the fix in HDFS-7042, since the file...
http://issues.apache.org/jira/browse/HDFS-7131    Author: Jing Zhao, 2015-03-02, 16:55
[HDFS-7749] Erasure Coding: Add striped block support in INodeFile - HDFS - [issue]
...This jira plan to add a new INodeFile feature to store the stripped blocks information in case that the INodeFile is erasure coded....
http://issues.apache.org/jira/browse/HDFS-7749    Author: Jing Zhao, 2015-02-27, 21:22
[HDFS-7828] List variable length blocks in Fsck - HDFS - [issue]
...HDFS-3689 adds new functionalities to create blocks with variable length. It will be helpful to add functionality to fsck to list these blocks (i.e., blocks which are not the last block of a...
http://issues.apache.org/jira/browse/HDFS-7828    Author: Jing Zhao, 2015-02-24, 03:16
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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