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[HBASE-9117] Remove HTablePool and all HConnection pooling related APIs - HBase - [issue]
...The recommended way is now: Create an HConnection: HConnectionManager.createConnection(...) Create a light HTable: HConnection.getTable(...) table.close() connection.close()All other API and...
http://issues.apache.org/jira/browse/HBASE-9117    Author: Lars Hofhansl, 2014-11-26, 18:48
[HBASE-5954] Allow proper fsync support for HBase - HBase - [issue]
...At least get recommendation into 0.96 doc and some numbers running w/ this hdfs feature enabled....
http://issues.apache.org/jira/browse/HBASE-5954    Author: Lars Hofhansl, 2014-11-23, 18:51
[HBASE-9731] updatesBlockedSeconds RegionServer metric should not be a histogram - HBase - [issue]
...I just noticed that updatesBlockedSeconds is declared as a histogram (in 0.94), which makes little sense (neither mean, nor any percentiles are useful, as it is an every increasing number).T...
http://issues.apache.org/jira/browse/HBASE-9731    Author: Lars Hofhansl, 2014-11-23, 01:37
[HBASE-6974] Metric for blocked updates - HBase - [issue]
...When the disc subsystem cannot keep up with a sustained high write load, a region will eventually block updates to throttle clients.(HRegion.checkResources).It would be nice to have a metric...
http://issues.apache.org/jira/browse/HBASE-6974    Author: Lars Hofhansl, 2014-11-23, 01:37
[HBASE-12363] Improve how KEEP_DELETED_CELLS works with MIN_VERSIONS - HBase - [issue]
...Brainstorming...This morning in the train (of all places) I realized a fundamental issue in how KEEP_DELETED_CELLS is implemented.The problem is around knowing when it is safe to remove a de...
http://issues.apache.org/jira/browse/HBASE-12363    Author: Lars Hofhansl, 2014-11-20, 23:13
[HBASE-12545] Fix backwards compatibility issue introduced with HBASE-12363 - HBase - [issue]
http://issues.apache.org/jira/browse/HBASE-12545    Author: Lars Hofhansl, 2014-11-20, 21:47
[HBASE-12411] Optionally enable p-reads and private readers for compactions - HBase - [issue]
...In the light of HDFS-6735 we might want to consider refraining from seek + read completely and only perform preads.For example currently a compaction can lock out every other scanner over th...
http://issues.apache.org/jira/browse/HBASE-12411    Author: Lars Hofhansl, 2014-11-19, 06:29
[HBASE-7336] HFileBlock.readAtOffset does not work well with multiple threads - HBase - [issue]
...HBase grinds to a halt when many threads scan along the same set of blocks and neither read short circuit is nor block caching is enabled for the dfs client ... disabling the block cache mak...
http://issues.apache.org/jira/browse/HBASE-7336    Author: Lars Hofhansl, 2014-11-16, 19:44
[HBASE-12457] Regions in transition for a long time when CLOSE interleaves with a slow compaction - HBase - [issue]
...Under heave load we have observed regions remaining in transition for 20 minutes when the master requests a close while a slow compaction is running.The pattern is always something like this...
http://issues.apache.org/jira/browse/HBASE-12457    Author: Lars Hofhansl, 2014-11-14, 06:12
[HBASE-12173] Backport: [PE] Allow random value size - HBase - [issue]
http://issues.apache.org/jira/browse/HBASE-12173    Author: Lars Hofhansl, 2014-11-08, 01:13
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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