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[HIVE-9269] LLAP: introduce low-level cache for ORC - Hive - [issue]
...There are two distinct options for caching encoded data in row-columnar format - caching logical chunks (e.g. for ORC stripe x column, or rg x column), or caching physical chunks (e.g. for O...
http://issues.apache.org/jira/browse/HIVE-9269    Author: Sergey Shelukhin, 2015-01-17, 02:06
[HIVE-9331] get rid of pre-optimized-hashtable memory optimizations - Hive - [issue]
...These were added in 13 because optimized hashtable couldn't make it in; they reduced memory usage by some amount (10-25%), and informed the design of the optimized hashtable, but now extra s...
http://issues.apache.org/jira/browse/HIVE-9331    Author: Sergey Shelukhin, 2015-01-16, 08:33
[HIVE-9270] LLAP: improve high-level cache from prototype - Hive - [issue]
...Cache in the prototype has number of limitations.1) Having 16-32-..Mb chunks with many logical units of caching can result in undesirable priority phenomena. Priority tracking is needed for ...
http://issues.apache.org/jira/browse/HIVE-9270    Author: Sergey Shelukhin, 2015-01-06, 21:30
[HIVE-9268] LLAP: refactor prototype code to salvage some parts - Hive - [issue]
...After looking at prototype in discussion, there were some changes, such as hiding I/O layer in the service itself rather than exposing it directly (inputformat is too inflexible as an interf...
http://issues.apache.org/jira/browse/HIVE-9268    Author: Sergey Shelukhin, 2015-01-06, 21:00
[expand - 1 more] - Re: pre-commit test scripts - Hive - [mail # dev]
...Sorry, this fell thru the cracks.What I meant is not ignoring test time conflicts, but ignoring conflictswhen applying the patch.So, if out files conflict, it will just ignore conflicts, res...
   Author: Sergey Shelukhin, 2015-01-06, 00:44
[HIVE-8395] CBO: enable by default - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-8395    Author: Sergey Shelukhin, 2014-12-19, 12:04
[HIVE-9162] stats19 test is environment-dependant - Hive - [issue]
...This is a very annoying test...
http://issues.apache.org/jira/browse/HIVE-9162    Author: Sergey Shelukhin, 2014-12-19, 00:49
[HIVE-9131] MiniTez optimize_nullscan test is unstable - Hive - [issue]
...Sometimes fails with:2014-12-16 11:55:04,139 ERROR ql.Driver (SessionState.java:printError(834)) - FAILED: ClassCastException org.apache.hadoop.hive.ql.plan.MapWork cannot be cast to org.apa...
http://issues.apache.org/jira/browse/HIVE-9131    Author: Sergey Shelukhin, 2014-12-19, 00:34
[HIVE-8848] data loading from text files or text file processing doesn't handle nulls correctly - Hive - [issue]
...I am not sure how nulls are supposed to be stored in text tables, but after loading some data with "null" or "NULL" strings, or x00 characters, we get bunch of annoying logging from LazyPrim...
http://issues.apache.org/jira/browse/HIVE-8848    Author: Sergey Shelukhin, 2014-12-18, 06:50
[HIVE-9074] add ability to force direct sql usage for perf reasons - Hive - [issue]
...Some people run direct SQL and hit failures (e.g. due to Oracle 1000-in-expressions stupidity, illegal cast "optimization" in Derby and Oracle, or some other Hive and DB bugs). Currently, it...
http://issues.apache.org/jira/browse/HIVE-9074    Author: Sergey Shelukhin, 2014-12-17, 19:27
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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