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[HIVE-14200] Tez: disable auto-reducer parallelism when reducer-count * min.partition.factor < 1.0 - Hive - [issue]
...The min/max factors offer no real improvement when the fractions are meaningless, for example when 0.25 * 2  is applied as the min....    Author: Gopal V , 2019-08-01, 22:28
[HIVE-22064] CBO: Rewrite year() predicate to a constant condition - Hive - [issue]
...CREATE TEMPORARY TABLE users (signup_date date, user_id bigint) stored as ORC;INSERT INTO users values("1999-01-01", 1);EXPLAIN ANALYZESELECT year(signup_date), count(distinct user_id) from ...    Author: Gopal V , 2019-07-30, 22:49
[HADOOP-16461] Regression: FileSystem cache lock parses XML within the lock - Hadoop - [issue]
...     ...    Author: Gopal V , 2019-07-26, 10:35
[HIVE-19113] Bucketing: Make CLUSTERED BY do CLUSTER BY if no explicit sorting is specified - Hive - [issue]
...The user's expectation of "create external table bucketed (key int) clustered by (key) into 4 buckets stored as orc;"is that the table will cluster the key into 4 buckets, while the file lay...    Author: Gopal V , 2019-07-24, 14:14
[HIVE-20385] Date: date + int fails to add days - Hive - [issue] current_date + 5;FAILED: SemanticException [Error 10014]: Line 1:7 Wrong arguments '5': No matching method for class org.apache.hadoop.hive.ql.udf.generic.GenericUDFOPDTIPlus with (da...    Author: Gopal V , 2019-07-20, 03:03
[HADOOP-12956] Inevitable Log4j2 migration via slf4j - Hadoop - [issue]
...5 August 2015 --The Apache Logging Services™ Project Management Committee (PMC) has announced that the Log4j™ 1.x logging framework has reached its end of life (EOL) and is no longer officia...    Author: Gopal V , 2019-07-19, 21:09
[HIVE-21437] Vectorization: Decimal64 division with integer columns - Hive - [issue]
...Vectorizer fails forCREATE temporary TABLE `catalog_Sales`(  `cs_quantity` int,   `cs_wholesale_cost` decimal(7,2),   `cs_list_price` decimal(7,2),   `cs_sales_price` dec...    Author: Gopal V , 2019-07-10, 17:37
[HIVE-21547] Temp Tables: Use stORC format for temporary tables - Hive - [issue]
...Using st(reaming)ORC ( format has massive performance advantages when creating data-sets which will not be stored for long-term.The f...    Author: Gopal V , 2019-07-09, 15:47
[HIVE-21817] CBO: PartitionPruner cache-miss from Calcite planner - Hive - [issue]
... public static PrunedPartitionList prune(Table tab, ExprNodeDesc prunerExpr,      HiveConf conf, String alias, Map<String, PrunedPartitionList> prunedPartitionsMap)...    Author: Gopal V , 2019-07-03, 16:38
[HIVE-21232] LLAP: Add a cache-miss friendly split affinity provider - Hive - [issue]
...If one of the LLAP nodes have data-locality, preferring that over another does have advantages for the first query or a more general cache-miss....    Author: Gopal V , 2019-07-03, 09:45