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[HIVE-6632] ORC should be able to only read needed fields in a complex column - Hive - [issue]
...Currently, we use a string of ids to record needed columns. However, this string cannot record needed fields of a complex column. Although ORC decomposes a complex column to multiple sub-col...
http://issues.apache.org/jira/browse/HIVE-6632    Author: Yin Huai, 2014-03-12, 16:50
[HIVE-5922] In orc.InStream.CompressedStream, the desired position passed to seek can equal offsets[i] + bytes[i].remaining() when ORC predicate pushdown is enabled - Hive - [issue]
...Two stack traces ...java.io.IOException: IO error in map input file hdfs://10.38.55.204:8020/user/hive/warehouse/ssdb_bin_compress_orc_large_0_13.db/cycle/000004_0 at org.apache.hadoop.mapre...
http://issues.apache.org/jira/browse/HIVE-5922    Author: Yin Huai, 2014-02-17, 04:52
[HIVE-6083] User provided table properties are not assigned to the TableDesc of the FileSinkDesc in a CTAS query - Hive - [issue]
...I was trying to use a CTAS query to create a table stored with ORC and orc.compress was set to SNAPPY. However, the table was still compressed as ZLIB (although the result of DESCRIBE still ...
http://issues.apache.org/jira/browse/HIVE-6083    Author: Yin Huai, 2014-01-22, 05:09
[HIVE-5945] ql.plan.ConditionalResolverCommonJoin.resolveMapJoinTask also sums those tables which are not used in the child of this conditional task. - Hive - [issue]
...Here is an exampleselect   i_item_id,   s_state,   avg(ss_quantity) agg1,   avg(ss_list_price) agg2,   avg(ss_coupon_amt) agg3,   ...
http://issues.apache.org/jira/browse/HIVE-5945    Author: Yin Huai, 2014-01-16, 17:46
Re: ORC file tuning - Hive - [mail # user]
...Hi Avrilia,  In org.apache.hadoop.hive.ql.io.orc.WriterImpl, the block size is determined by Math.min(1.5GB, 2 * stripeSize). Also, you can use "orc.block.padding" in the table property...
   Author: Yin Huai, 2013-12-30, 15:58
Re: [ANNOUNCE] New Hive PMC Member - Gunther Hagleitner - Hive - [mail # dev]
...Congrats Gunther!   On Fri, Dec 27, 2013 at 10:13 AM, Brock Noland  wrote:  ...
   Author: Yin Huai, 2013-12-27, 15:33
[expand - 1 more] - Re: Question on correlation optimizer - Hive - [mail # user]
...Hi Avrilia,  I am attaching the operator tree in the reduce side. [image: Inline image 1]  When printing out the plan, MuxOperator was called twice from its both parents. So, the p...
   Author: Yin Huai, 2013-12-11, 14:34
[HIVE-6007] Make the output of the reduce side plan optimized by the correlation optimizer more reader-friendly. - Hive - [issue]
...Because a MuxOperator can have multiple parents, the output of the plan can show the sub-plan starting from this MuxOperator multiple times, which makes the reduce side plan confusing. An ex...
http://issues.apache.org/jira/browse/HIVE-6007    Author: Yin Huai, 2013-12-11, 14:32
Does the trunk still have an eclipse formatter? - Hive - [mail # dev]
...Hi all,  After importing the trunk to eclipse, I found that eclipse did not load the hive formatter. Does trunk still have one? If so, where is the location of it?  Thanks,  Y...
   Author: Yin Huai, 2013-12-04, 16:55
[HIVE-4827] Merge a Map-only task to its child task - Hive - [issue]
...When hive.optimize.mapjoin.mapreduce is on, CommonJoinResolver can attach a Map-only job (MapJoin) to its following MapReduce job. But this merge only happens when the MapReduce job has a si...
http://issues.apache.org/jira/browse/HIVE-4827    Author: Yin Huai, 2013-11-26, 16:50
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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