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[HBASE-6148] [89-fb] Avoid allocating large objects when reading corrupted RPC - HBase - [issue]
...Recently RegionServer allocates very large objects when reading some corrupted RPC calls, which may caused by client-server version incompatibility. We need to add a protection before alloca...
http://issues.apache.org/jira/browse/HBASE-6148    Author: Liyin Tang, 2015-04-22, 01:47
[HBASE-6911] [89-fb] Set the logging for the location cache hit in the hbase client as trace level - HBase - [issue]
...It is too much logging for each row-location cache hit in the hbase client. So set it as the trace level....
http://issues.apache.org/jira/browse/HBASE-6911    Author: Liyin Tang, 2015-03-23, 17:40
[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, 2015-03-23, 17:40
[HBASE-3663] The starvation problem in current load balance algorithm - HBase - [issue]
...This is an interesting starvation case. There are 2 conditions to trigger this problem.Condition1: r/s - r/(s+1) << 1 Let r: the number of regionsLet s: the number of serversCondition2...
http://issues.apache.org/jira/browse/HBASE-3663    Author: Liyin Tang, 2015-01-08, 08:49
[HBASE-4525] HBase always run with default hadoop setting. - HBase - [issue]
...When we build the hbase, we can say which version of hadoop we want to build with.For example: mvn  -DskipTests=true package mvn -Dhadoop.profile=22 -DskipTests=true packageHo...
http://issues.apache.org/jira/browse/HBASE-4525    Author: Liyin Tang, 2015-01-07, 19:48
[HBASE-4491] HBase Locality Checker - HBase - [issue]
...If we run data node and region server in the same physical machine, region server will be benefit if the store files for its serving regions have a local replica in the data node process.So ...
http://issues.apache.org/jira/browse/HBASE-4491    Author: Liyin Tang, 2014-12-24, 20:13
[HBASE-4689] [89-fb] Make the table level metrics work with rpc* metrics - HBase - [issue]
...In r1182034, the per table/cf for rpc* metrics has a bug. It will only show cf level metrics even though we enabled the per table level metrics.Fix this bug here....
http://issues.apache.org/jira/browse/HBASE-4689    Author: Liyin Tang, 2014-12-24, 20:05
[HBASE-5369] Compaction selection based on the hotness of the HFile's block in the block cache - HBase - [issue]
...HBase reserves a large set memory for the block cache and the cached blocks will be age out in a LRU fashion. Obviously, we don't want to age out the blocks which are still hot. However, whe...
http://issues.apache.org/jira/browse/HBASE-5369    Author: Liyin Tang, 2014-08-08, 19:34
[HBASE-10343] Write the last sequence id into the HLog during the RegionOpen time - HBase - [issue]
...HLog based async replication has a challenging to guarantee the in-order delivery when the Region is moving from one HLog stream to another HLog stream. One approach is to keep the last_sequ...
http://issues.apache.org/jira/browse/HBASE-10343    Author: Liyin Tang, 2014-05-27, 04:52
[HBASE-10784] [89-fb] Avoid the unnecessary memory copy for RowCol and DeleteColumn Bloom filters - HBase - [issue]
...For adding/querying rowcol and deleteColumn BF, there are multiple unnecessary memory copy operations. This jira is to address the concern and avoid creating these dummy bloom keys as much a...
http://issues.apache.org/jira/browse/HBASE-10784    Author: Liyin Tang, 2014-03-18, 18:35
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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