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[HBASE-12911] Client-side metrics - HBase - [issue]
...There's very little visibility into the hbase client. Folks who care to add some kind of metrics collection end up wrapping Table method invocations with System.currentTimeMillis(). For a cr...
http://issues.apache.org/jira/browse/HBASE-12911    Author: Nick Dimiduk, 2015-02-27, 18:01
[expand - 2 more] - Re: HBase connection pool - HBase - [mail # user]
...Can you tell when these WARN messages are produced? Is it related to thecreation of the connection object or one of the HTable instances?On Thu, Feb 26, 2015 at 7:27 AM, Marcelo Valle (BLOOM...
   Author: Nick Dimiduk, 2015-02-26, 19:17
[HBASE-12833] [shell] table.rb leaks connections - HBase - [issue]
...TestShell is erring out (timeout) consistently for me. Culprit is OOM cannot create native thread. It looks to me like test_table.rb and hbase/table.rb are made for leaking connections. tabl...
http://issues.apache.org/jira/browse/HBASE-12833    Author: Nick Dimiduk, 2015-02-26, 12:51
[HBASE-13086] Show ZK root node on Master WebUI - HBase - [issue]
...Currently we show a well-formed ZK quorum on the master webUI but not the root node. Root node can be changed based on deployment, so we should list it here explicitly. This information is h...
http://issues.apache.org/jira/browse/HBASE-13086    Author: Nick Dimiduk, 2015-02-26, 00:04
[HBASE-13101] RPC throttling to protect against malicious clients - HBase - [issue]
...We should protect a region server from poorly designed/implemented clients/schemas that result in a "hotspot" which overwhelms a single machine. A client that creates a new connection for ea...
http://issues.apache.org/jira/browse/HBASE-13101    Author: Nick Dimiduk, 2015-02-25, 22:55
[expand - 1 more] - Re: Table.get(List<Get>) overwhelms several RSs - HBase - [mail # user]
...How large are the KeyValues? Can you estimate how much data you'rematerializing for this query? HBase's RPC implementation does not currentlysupport streaming, so the entire result set (all ...
   Author: Nick Dimiduk, 2015-02-25, 18:24
Re: [ANNOUNCE] Apache HBase 1.0.0 is now available for download - HBase - [mail # user]
...Woo!On Tue, Feb 24, 2015 at 8:46 AM, Jeremy Carroll  wrote: ...
   Author: Nick Dimiduk, 2015-02-24, 16:52
[expand - 2 more] - Re: HBase with opentsdb creates huge .tmp file & runs out of hdfs space - HBase - [mail # user]
...Oh I see snappy and no block encoder. How about stack traces while theendless file is being created (like, a couple/sec)? Poor man's sampler.On Monday, February 23, 2015, Nick Dimiduk  ...
   Author: Nick Dimiduk, 2015-02-24, 01:51
Re: HBase Region always in transition + corrupt HDFS - HBase - [mail # user]
...HBase/HDFS are maintaining block checksums, so presumably a corrupted blockwould fail checksum validation. Increasing the number of replicas increasesthe odds that you'll still have a valid ...
   Author: Nick Dimiduk, 2015-02-23, 20:35
[HBASE-12645] HBaseTestingUtility is using ${$HOME} for rootDir - HBase - [issue]
...I noticed this while running tests on branch-1Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.009 sec <<< FAILURE! - in org.apache.hadoop.hbase.regionserver.wal.Te...
http://issues.apache.org/jira/browse/HBASE-12645    Author: Nick Dimiduk, 2015-02-21, 23:50
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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