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[HDFS-7689] Add periodic checker to find the corrupted EC blocks/files - HDFS - [issue]
...Periodic checker similar to ReplicationMonitor to monitor the EC files/blocks for the corruption/missing and schedule for the recovery/correction...
http://issues.apache.org/jira/browse/HDFS-7689    Author: Vinayakumar B, 2015-03-28, 00:25
[HDFS-7410] Support CreateFlags with append() to support hsync() for appending streams - HDFS - [issue]
...Current FileSystem APIs include CreateFlag only for the create() api, and some of these (SYNC_BLOCK) are for only client side and will not be stored in metadata of the file. So append() oper...
http://issues.apache.org/jira/browse/HDFS-7410    Author: Vinayakumar B, 2015-03-27, 15:15
[HDFS-6841] Use Time.monotonicNow() wherever applicable instead of Time.now() - HDFS - [issue]
...Time.now() used  in many places to calculate elapsed time.This should be replaced with Time.monotonicNow() to avoid effect of System time changes on elapsed time calculations....
http://issues.apache.org/jira/browse/HDFS-6841    Author: Vinayakumar B, 2015-03-24, 02:22
[expand - 5 more] - Re: upstream jenkins build broken? - HDFS - [mail # dev]
...This problems seems to be gone atleast for now.Have made a temp ( as of now) commit to restore the execute permissions forhadoop-hdfs/target/test/data directory.Problem was often seen on H9 ...
   Author: Vinayakumar B, 2015-03-18, 02:22
[HDFS-7916] 'reportBadBlocks' from datanodes to standby Node BPServiceActor goes for infinite loop - HDFS - [issue]
...if any badblock found, then BPSA for StandbyNode will go for infinite times to report it.2015-03-11 19:43:41,528 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Failed to report bad bl...
http://issues.apache.org/jira/browse/HDFS-7916    Author: Vinayakumar B, 2015-03-17, 16:31
[HDFS-5903] FSVolumeList#initializeReplicaMaps(..) not doing anything, it can be removed - HDFS - [issue]
...  void initializeReplicaMaps(ReplicaMap globalReplicaMap) throws IOException {    for (FsVolumeImpl v : volumes) {      v.getVolumeMap(globalRepl...
http://issues.apache.org/jira/browse/HDFS-5903    Author: Vinayakumar B, 2015-03-09, 08:48
[HDFS-6111] Avoid duplicate entries in Block Scan verification logs - HDFS - [issue]
...Duplicate entries could be generated in datanode verification logs if the datanode gets shutdown during the rolling of scan verification logs.If this happens multiple times in huge cluster, ...
http://issues.apache.org/jira/browse/HDFS-6111    Author: Vinayakumar B, 2015-03-09, 08:42
[HDFS-6147] New blocks scanning will be delayed due to issue in BlockPoolSliceScanner#updateBytesToScan(..) - HDFS - [issue]
...New blocks scanning will be delayed if old blocks deleted after datanode restart.Steps:1. Write some blocks and wait till all scans over2. Restart the datanode3. Delete some of the blocks4. ...
http://issues.apache.org/jira/browse/HDFS-6147    Author: Vinayakumar B, 2015-03-09, 08:41
[HDFS-7210] Avoid two separate RPC's namenode.append() and namenode.getFileInfo() for an append call from DFSClient - HDFS - [issue]
...Currently DFSClient does 2 RPCs to namenode for an append operation.append() for re-opening the file and getting the last block, getFileInfo() Another on to get HdfsFileStateIf we can combin...
http://issues.apache.org/jira/browse/HDFS-7210    Author: Vinayakumar B, 2015-03-02, 17:02
[HDFS-7349] Support DFS command for the EC encoding - HDFS - [issue]
...Support implementation of the following commandshdfs dfs -convertToEC <path>   <path>: Converts all blocks under this path to EC form (if not already in EC form, and if...
http://issues.apache.org/jira/browse/HDFS-7349    Author: Vinayakumar B, 2015-02-28, 01:15
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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