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[HBASE-9915] Performance: isSeeked() in EncodedScannerV2 always returns false - HBase - [issue]
...While debugging why reseek is so slow I found that it is quite broken for encoded scanners.The problem is this:AbstractScannerV2.reseekTo(...) calls isSeeked() to check whether scanner was s...
http://issues.apache.org/jira/browse/HBASE-9915    Author: Lars Hofhansl, 2013-11-30, 03:11
[HBASE-7141] Cleanup Increment and Append issues - HBase - [issue]
...Append and Increment should take a TS for their update phase Append should access a timerange for the read phase Increment should no longer implement Writable (in trunk) Increment and Append...
http://issues.apache.org/jira/browse/HBASE-7141    Author: Lars Hofhansl, 2013-11-27, 23:35
[HBASE-10015] Replace intrinsic locking with explicit locks in StoreScanner - HBase - [issue]
...Did some more profiling (this time with a sampling profiler) and StoreScanner.peek() showed up a lot in the samples. At first that was surprising, but peek is synchronized, so it seems a lot...
http://issues.apache.org/jira/browse/HBASE-10015    Author: Lars Hofhansl, 2013-11-27, 21:42
[HBASE-9956] Remove keyLength cache from KeyValue - HBase - [issue]
...See discussion in HBASE-9935. Currently KeyValue caches the keyLength in order to avoid decoding the key length in getKeyLength() repeatedly.Benchmarking outside of a profiler revealed no im...
http://issues.apache.org/jira/browse/HBASE-9956    Author: Lars Hofhansl, 2013-11-26, 05:53
[HBASE-9971] Port part of HBASE-9958 to 0.94 - change lock scope in locateRegion - HBase - [issue]
...Simple fix that we should have in 0.94 as well....
http://issues.apache.org/jira/browse/HBASE-9971    Author: Lars Hofhansl, 2013-11-26, 05:53
[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 Phoenix).It'...
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(), kv.getFa...
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
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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