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[HBASE-7348] [89-fb] Add some statistics from DFSClient to RegionServerMetrics - HBase - [issue]
...DFSClient actually collected a number of useful statistics such as bytesLocalRead, bytesLocalRackRead and so on. So this diff is going to merge these metrics into the RegionServerMetrics....
http://issues.apache.org/jira/browse/HBASE-7348    Author: Liyin Tang, 2012-12-13, 19:32
[HBASE-7276] [89-fb] Optimize the read/write requests metrics in the RegionServer level - HBase - [issue]
...In HBase, each RegionServer will host a set of Regions and both of them keep track of the read/write requests metrics. So total number of read/write requests among all the Regions shall be e...
http://issues.apache.org/jira/browse/HBASE-7276    Author: Liyin Tang, 2012-12-04, 23:18
[HBASE-7267] [89-fb] Only create the dummy hfile for the compaction if necessary. - HBase - [issue]
...In HBASE-6059, it introduced a new behavior that the compaction would create the HFileWriter no mater whether there is any key/value as the output or not. This new behavior actually is confl...
http://issues.apache.org/jira/browse/HBASE-7267    Author: Liyin Tang, 2012-12-04, 21:06
[HBASE-7275] [89-fb] Fixing some minor bugs in 89-fb branch - HBase - [issue]
...[89-fb] Fixing some minor bugs in 89-fb branch based on the findBugs report...
http://issues.apache.org/jira/browse/HBASE-7275    Author: Liyin Tang, 2012-12-04, 20:04
[HBASE-7106] [89-fb] Fix the NPE in unit tests for JDK7 - HBase - [issue]
...In JDK7, it will throw out NPE if put a NULL into a TreeSet. And in the unit tests, user can add a NULL as qualifier into the family map for GET or SCAN. So we shall do the followings: 1) Ma...
http://issues.apache.org/jira/browse/HBASE-7106    Author: Liyin Tang, 2012-11-17, 17:45
[HBASE-7164] [89-fb] Using HFileOutputFormat as MapOutputFormat - HBase - [issue]
...Add one more option in TableMapReduceUtil to initialize a Map only job which takes TableInputFormat as MapInputFormat and HFileOutputFormat as MapOutputFormat....
http://issues.apache.org/jira/browse/HBASE-7164    Author: Liyin Tang, 2012-11-15, 00:08
[HBASE-5987] HFileBlockIndex improvement - HBase - [issue]
...Recently we find out a performance problem that it is quite slow when multiple requests are reading the same block of data or index. From the profiling, one of the causes is the IdLock conte...
http://issues.apache.org/jira/browse/HBASE-5987    Author: Liyin Tang, 2012-11-05, 01:35
[HBASE-6968] Several HBase write perf improvement - HBase - [issue]
...Here are 2 hbase write performance improvements recently:1) Avoid creating HBaseConfiguraiton object for each HLog. Every time when creating a HBaseConfiguraiton object, it would parse the x...
http://issues.apache.org/jira/browse/HBASE-6968    Author: Liyin Tang, 2012-10-27, 00:46
[HBASE-6858] Fix the incorrect BADVERSION checking in the recoverable zookeeper - HBase - [issue]
...Thanks for Stack and Kaka's reporting that there is a bug in the recoverable zookeeper when handling BADVERSION exception for setData(). It shall compare the ID payload of the data in zk wit...
http://issues.apache.org/jira/browse/HBASE-6858    Author: Liyin Tang, 2012-10-17, 01:31
[HBASE-3857] Change the HFile Format - HBase - [issue]
...In order to support HBASE-3763 and HBASE-3856, we need to change the format of the HFile. The new format proposal is attached here. Thanks for Mikhail Bautin for the documentation....
http://issues.apache.org/jira/browse/HBASE-3857    Author: Liyin Tang, 2012-10-10, 16:08
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