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[HDFS-7899] Improve EOF error message - HDFS - [issue]
...Currently, a DN disconnection for reasons other than connection timeout or refused messages, such as an EOF message as a result of rejection or other network fault, reports in this manner:WA...
http://issues.apache.org/jira/browse/HDFS-7899    Author: Harsh J, 2015-03-06, 10:34
[YARN-3021] YARN's delegation-token handling disallows certain trust setups to operate properly over DistCp - YARN - [issue]
...Consider this scenario of 3 realms: A, B and COMMON, where A trusts COMMON, and B trusts COMMON (one way trusts both), and both A and B run HDFS + YARN clusters.Now if one logs in with a COM...
http://issues.apache.org/jira/browse/YARN-3021    Author: Harsh J, 2015-03-06, 06:28
[HIVE-9870] Add JvmPauseMonitor threads to HMS and HS2 daemons - Hive - [issue]
...The hadoop-common carries in it a nifty thread that prints GC or non-GC pauses within the JVM if it exceeds a specific threshold.This has been immeasurably useful in supporting several clust...
http://issues.apache.org/jira/browse/HIVE-9870    Author: Harsh J, 2015-03-05, 19:40
[HADOOP-7947] Validate XMLs if a relevant tool is available, when using scripts - Hadoop - [issue]
...Given that we are locked down to using only XML for configuration and most of the administrators need to manage it by themselves (unless a tool that manages for you is used), it would be goo...
http://issues.apache.org/jira/browse/HADOOP-7947    Author: Harsh J, 2015-03-03, 23:06
Re: MR Code example with Kerberos Authentication - MapReduce - [mail # dev]
...The use of kerberos is transparent to job development, unless you havelong-running application needs.When properly configured to use security (via the XML files), theJobClient/etc. will auto...
   Author: Harsh J, 2015-02-24, 07:26
[HDFS-7501] TransactionsSinceLastCheckpoint can be negative on SBNs - HDFS - [issue]
...The metric TransactionsSinceLastCheckpoint is derived as FSEditLog.txid minus NNStorage.mostRecentCheckpointTxId.In Standby mode, the former does not increment beyond the loaded or last-when...
http://issues.apache.org/jira/browse/HDFS-7501    Author: Harsh J, 2015-02-20, 16:06
[HDFS-7546] Document, and set an accepting default for dfs.namenode.kerberos.principal.pattern - HDFS - [issue]
...This config is used in the SaslRpcClient, and the no-default breaks cross-realm trust principals being used at clients.Current location: https://github.com/apache/hadoop/blob/trunk/hadoop-co...
http://issues.apache.org/jira/browse/HDFS-7546    Author: Harsh J, 2015-02-17, 08:12
[HADOOP-11512] Use getTrimmedStrings when reading serialization keys - Hadoop - [issue]
...In the file hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/serializer/SerializationFactory.java, we grab the IO_SERIALIZATIONS_KEY config as Configuration#getStrings(...
http://issues.apache.org/jira/browse/HADOOP-11512    Author: Harsh J, 2015-02-17, 08:12
Re: Multiple Filterlists - HBase - [mail # user]
...You can build a single FilterList consisting of multiple FilterLists,if that is what you're looking for.On Fri, Feb 13, 2015 at 5:03 PM, Pragalbh Garg wrote:Harsh J ...
   Author: Harsh J, 2015-02-13, 13:37
[HADOOP-11488] Difference in default connection timeout for S3A FS - Hadoop - [issue]
...The core-default.xml defines fs.s3a.connection.timeout as 5000, and the code under hadoop-tools/hadoop-aws defines it as 50000.We should update the former to 50s so it gets taken properly, a...
http://issues.apache.org/jira/browse/HADOOP-11488    Author: Harsh J, 2015-02-10, 09:35
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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