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[HBASE-9993] 0.94: HBASE-9865 breaks coprocessor compatibility with WALEdit. - HBase - [issue]
...  public List<KeyValue> getKeyValues() {Was changed to   public ArrayList<KeyValue> getKeyValues() {This break existing coprocessors (such as those used in Ph...
http://issues.apache.org/jira/browse/HBASE-9993    Author: Lars Hofhansl, 2013-11-26, 05:53
[HBASE-10028] Cleanup metrics documentation - HBase - [issue]
...The current documentation of the metrics is incomplete and at point incorrect (HDFS latencies are in ns rather than ms for example).We should clean this up and add other related metrics as w...
http://issues.apache.org/jira/browse/HBASE-10028    Author: Lars Hofhansl, 2013-11-26, 01:19
[HBASE-9799] Change Hadoop 1.2 dependency to 1.2.1 - HBase - [issue]
...The Hadoop 1.2 profile is currently 1.2.0. We should update that to 1.2.1.Was:This will switch the default Hadoop profile to 1.2.1.The Hadoop 1.0.x (1.0.4 currently) will remain and we will ...
http://issues.apache.org/jira/browse/HBASE-9799    Author: Lars Hofhansl, 2013-11-15, 16:54
[HBASE-9935] Slight perf improvement: Avoid KeyValue.getRowLength() at some places - HBase - [issue]
...Here's an example:KeyValue.createLastOnRow(          kv.getBuffer(), kv.getRowOffset(), kv.getRowLength(),          kv.getBuffer()...
http://issues.apache.org/jira/browse/HBASE-9935    Author: Lars Hofhansl, 2013-11-12, 01:01
[HBASE-9711] Improve HBASE-9428 - avoid copying bytes for RegexFilter unless necessary - HBase - [issue]
...Parent patch copies input for RegexFilter unconditionally.We should only do this if the KV portion into the passed byte[] is < 1/2 of the passed byte[]. Otherwise we waste cycles.Patch is...
http://issues.apache.org/jira/browse/HBASE-9711    Author: Lars Hofhansl, 2013-11-08, 00:03
[HBASE-9789] Change logging for Coprocessor exec call to trace - HBase - [issue]
...Currently both RegionServer and HMaster log (debug) this"Received dynamic protocol exec call with protocolName <class>"on each coprocessor exec call.We just filled our RegionServer log...
http://issues.apache.org/jira/browse/HBASE-9789    Author: Lars Hofhansl, 2013-11-08, 00:03
[HBASE-9732] Static AtomicLong updated in StoreFileScanner every (re)seek - HBase - [issue]
...To verify a single test case, we update a static AtomicLong for every seek performed on a RegionServer. This is especially bad with multiple seeks going on at the same time.W.T.F...?This pen...
http://issues.apache.org/jira/browse/HBASE-9732    Author: Lars Hofhansl, 2013-11-08, 00:03
[HBASE-9807] block encoder unnecessarily copies the key for each reseek - HBase - [issue]
...In HFileReaderV2.AbstractScannerV2.reseekTo(...) we have this:        ByteBuffer bb = getKey();        compared = reader.getComparator().com...
http://issues.apache.org/jira/browse/HBASE-9807    Author: Lars Hofhansl, 2013-10-31, 21:49
[HBASE-5257] Allow INCLUDE_AND_NEXT_COL in filters and use it in ColumnPaginationFilter - HBase - [issue]
...There are various usecases and filter types where evaluating the filter before version are handled either do not make sense, or make filter handling more complicated.Also see this comment in...
http://issues.apache.org/jira/browse/HBASE-5257    Author: Lars Hofhansl, 2013-10-22, 20:52
Re: [hbase-5487] Master design discussion. - HBase - [mail # dev]
...Didn't read the spec, yet. My main gripe currently is that there are too many places holding the state: the fs, .meta., zk, copies in ram at both master and region servers, etc. Some of the ...
   Author: Lars Hofhansl, 2013-10-19, 22:10
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