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[HBASE-10805] Speed up KeyValueHeap.next() a bit - HBase - [issue]
...See discussion on HBASE-9969.This was brought up by Matt Corgan. Even though I didn't believe him first.      KeyValueScanner topScanner = this.heap.peek();   &...
http://issues.apache.org/jira/browse/HBASE-10805    Author: Lars Hofhansl, 2014-03-24, 19:00
[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, 2014-03-22, 00:51
[HBASE-10706] Disable writeToWal in tests where possible - HBase - [issue]
...See discussion in HBASE-10665.We should disable writeToAll in all tests except for those that test WAL specific stuff, in order to speed up the test suite....
http://issues.apache.org/jira/browse/HBASE-10706    Author: Lars Hofhansl, 2014-03-16, 01:24
[HBASE-10642] Add M/R over snapshots to 0.94 - HBase - [issue]
...I think we want drive towards all (or most) M/R over HBase to be against snapshots and HDFS directly.Adopting a simple input format (even if just as a sample) as part of HBase will allow us ...
http://issues.apache.org/jira/browse/HBASE-10642    Author: Lars Hofhansl, 2014-03-14, 21:25
[HBASE-10722] [0.94] HRegion.computeHDFSBlocksDistribution does not account for links and reference files. - HBase - [issue]
http://issues.apache.org/jira/browse/HBASE-10722    Author: Lars Hofhansl, 2014-03-14, 02:58
[HBASE-9778] Add hint to ExplicitColumnTracker to avoid seeking - HBase - [issue]
...The issue of slow seeking in ExplicitColumnTracker was brought up by Vladimir Rodionov on the dev list.My idea here is to avoid the seeking if we know that there aren't many versions to skip...
http://issues.apache.org/jira/browse/HBASE-9778    Author: Lars Hofhansl, 2014-03-12, 03:10
[HBASE-10594] Speed up TestRestoreSnapshotFromClient - HBase - [issue]
...Looking through the longest running test in 0.94 I noticed that TestRestoreSnapshotFromClient runs for over 10 minutes on the jenkins boxes (264s on my local box)....
http://issues.apache.org/jira/browse/HBASE-10594    Author: Lars Hofhansl, 2014-03-06, 03:38
[HBASE-10625] Remove unnecessary key compare from AbstractScannerV2.reseekTo - HBase - [issue]
...In reseekTo we find this...        compared = compareKey(reader.getComparator(), key, offset, length);        if (compared < 1) { &n...
http://issues.apache.org/jira/browse/HBASE-10625    Author: Lars Hofhansl, 2014-03-04, 20:52
[HBASE-10320] Avoid ArrayList.iterator() ExplicitColumnTracker - HBase - [issue]
...I noticed that in a profiler (sampler) run ScanQueryMatcher.setRow(...) showed up at all.In turns out that the expensive part is iterating over the columns in ExcplicitColumnTracker.reset()....
http://issues.apache.org/jira/browse/HBASE-10320    Author: Lars Hofhansl, 2014-02-26, 04:45
[HBASE-10551] Change local mode back to one RS thread by default - HBase - [issue]
...HBASE-10340/HBASE-9892 changed the default number of RS threads from 1 to 3. This is confusing. This is to set the default back to 1....
http://issues.apache.org/jira/browse/HBASE-10551    Author: Lars Hofhansl, 2014-02-26, 04:45
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