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[HDFS-2084] Sometimes backup node/secondary name node stops with exception - HDFS - [issue]
...2011-06-17 11:43:23,096 ERROR org.apache.hadoop.hdfs.server.namenode.Checkpointer: Throwable Exception in doCheckpoint: java.lang.NullPointerException        at org....
http://issues.apache.org/jira/browse/HDFS-2084    Author: Vitalii Tymchyshyn, 2015-03-01, 08:07
[HDFS-2306] NameNode web UI should show information about recent checkpoints - HDFS - [issue]
...It would be nice if the NN web UI showed the 2NN address, timestamp, number of edits, etc. of the last few checkpoints....
http://issues.apache.org/jira/browse/HDFS-2306    Author: Aaron T. Myers, 2015-03-01, 08:04
[HDFS-3267] TestBlocksWithNotEnoughRacks races with DN startup - HDFS - [issue]
...In TestBlocksWithNotEnoughRacks.testCorruptBlockRereplicatedAcrossRacks, it restarts a DN, and then proceeds to call "waitCorruptReplicas". But, because of HDFS-3266, it doesn't actually wai...
http://issues.apache.org/jira/browse/HDFS-3267    Author: Todd Lipcon, 2015-03-01, 07:27
[HDFS-5292] clean up output of `dfs -du -s` - HDFS - [issue]
...This could be formatted a little nicer:$ hdfs dfs -du -s /apps/hbase/data/data/default/*22604541341  /apps/hbase/data/data/default/IntegrationTestBulkLoad896656491  /apps/hbase/dat...
http://issues.apache.org/jira/browse/HDFS-5292    Author: Nick Dimiduk, 2015-03-01, 07:03
[HDFS-1447] Make getGenerationStampFromFile() more efficient, so it doesn't reprocess full directory listing for every block - HDFS - [issue]
...Make getGenerationStampFromFile() more efficient. Currently this routine is called by addToReplicasMap() for every blockfile in the directory tree, and it walks each file's containing direct...
http://issues.apache.org/jira/browse/HDFS-1447    Author: Matt Foley, 2015-03-01, 06:59
[HDFS-7231] rollingupgrade needs some guard rails - HDFS - [issue]
...See first comment....
http://issues.apache.org/jira/browse/HDFS-7231    Author: Allen Wittenauer, 2015-03-01, 06:24
[HDFS-7261] storageMap is accessed without synchronization in DatanodeDescriptor#updateHeartbeatState() - HDFS - [issue]
...Here is the code:      failedStorageInfos = new HashSet<DatanodeStorageInfo>(          storageMap.values());In other places, the lock ...
http://issues.apache.org/jira/browse/HDFS-7261    Author: Ted Yu, 2015-02-28, 16:27
[HDFS-7685] Document dfs.namenode.heartbeat.recheck-interval in hdfs-default.xml - HDFS - [issue]
...Please document the function of dfs.namenode.heartbeat.recheck-interval inside hdfs-site.xml as it can be used to configure time needed until a node is considered as dead....
http://issues.apache.org/jira/browse/HDFS-7685    Author: Frank Lanitz, 2015-02-28, 15:32
[HDFS-7769] TestHDFSCLI create files in hdfs project root dir - HDFS - [issue]
...After running TestHDFSCLI, two files (data and .data.crc) remain in hdfs project root dir....
http://issues.apache.org/jira/browse/HDFS-7769    Author: Tsz Wo Nicholas Sze, 2015-02-28, 15:32
[HDFS-7308] DFSClient write packet size may > 64kB - HDFS - [issue]
...In DFSOutputStream.computePacketChunkSize(..),  private void computePacketChunkSize(int psize, int csize) {    final int chunkSize = csize + getChecksumSize(); ...
http://issues.apache.org/jira/browse/HDFS-7308    Author: Tsz Wo Nicholas Sze, 2015-02-28, 15:32
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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