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[HBASE-12767] Fix a StoreFileScanner NPE in reverse scan flow - HBase - [issue]
...we observed a NPE in our internal 0.94 branch prd env:ERROR org.apache.hadoop.hbase.regionserver.HRegionServer: Failed openScannerjava.lang.NullPointerExceptionat org.apache.hadoop.hbase.reg...
http://issues.apache.org/jira/browse/HBASE-12767    Author: Liang Xie, 2014-12-30, 07:52
[HBASE-10506] Fail-fast if client connection is lost before the real call be executed in RPC layer - HBase - [issue]
...In current HBase rpc impletement, there is no any connection double-checking just before the "call" be invoked, considing there's a gc or other OS scheduling or the call queue is full enough...
http://issues.apache.org/jira/browse/HBASE-10506    Author: Liang Xie, 2014-12-06, 11:10
[HBASE-9679] Binary search in HFile block - HBase - [issue]
...It's not a top priority issue, seems to me.Right now hbase do a linear scan to search a key within a hfile block on interst, in special case, e.g. 100% read scenario or high read/write ratio...
http://issues.apache.org/jira/browse/HBASE-9679    Author: Liang Xie, 2014-08-29, 00:09
[HBASE-11355] a couple of callQueue related improvements - HBase - [issue]
...In one of my in-memory read only testing(100% get requests), one of the top scalibility bottleneck came from the single callQueue. A tentative sharing this callQueue according to the rpc han...
http://issues.apache.org/jira/browse/HBASE-11355    Author: Liang Xie, 2014-08-20, 15:06
[HBASE-11359] A simple request timeout interrupt mechanism in HBase server side - HBase - [issue]
...we had introduced a fail fast mechanism in RPC layer, see HBASE-10506.But still, a slow latency problem comes from lower HDFS layer could make all HBase handler threads slow, sometimes those...
http://issues.apache.org/jira/browse/HBASE-11359    Author: Liang Xie, 2014-06-16, 09:04
[HBASE-7449] Refine UseMembar detail - HBase - [issue]
...we encountered a hung issue, the thread dump shows:most of threads waiting to a lock but there isn't lock holder be foundWe know there were some discuss before, e.g:https://issues.apache.org...
http://issues.apache.org/jira/browse/HBASE-7449    Author: Liang Xie, 2014-06-08, 22:37
[HBASE-7922] minor code style improvements about HFileBlockIndex - HBase - [issue]
...Removed several warnings in eclipse editor.  no new test cases be added, since no semantics changed...
http://issues.apache.org/jira/browse/HBASE-7922    Author: Liang Xie, 2014-06-08, 22:36
[HBASE-10887] tidy ThriftUtilities format - HBase - [issue]
...Just found the weird code format during reviewing another patch, let's remove the unneccessary tab...
http://issues.apache.org/jira/browse/HBASE-10887    Author: Liang Xie, 2014-04-03, 23:53
[HBASE-8063] Filter HFiles based on first/last key - HBase - [issue]
...hbase-5010 introduced a filter mechanism based on timerange hint this jira is a placeholder just for keyrange hint: currently, low layer(hfile reader) has first/last key getter methods alrea...
http://issues.apache.org/jira/browse/HBASE-8063    Author: Liang Xie, 2014-03-25, 03:48
[HBASE-9631] add murmur3 hash - HBase - [issue]
...MurmurHash3 is the successor to MurmurHash2. It comes in 3 variants - a 32-bit version that targets low latency for hash table use and two 128-bit versions for generating unique identifiers ...
http://issues.apache.org/jira/browse/HBASE-9631    Author: Liang Xie, 2014-02-09, 03:57
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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