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[HIVE-21686] Brute Force eviction can lead to a random uncontrolled eviction pattern. - Hive - [issue]
...Current logic used by brute force eviction can lead to a perpetual random eviction pattern.For instance if the cache build a small pocket of free memory where the total size is greater than ...    Author: slim bouguerra , 2019-05-15, 18:39
[HIVE-21689] Buddy Allocator memory accounting does not account for failed allocation attempts - Hive - [issue]
...Allocation method on Buddy Allocator, does not release the reserved memory in case we failed to allocate the full sequence.Simple example:Assume We have an allocation request of 1kb.Will cal...    Author: slim bouguerra , 2019-05-04, 00:15
[HIVE-21665] Unable to reconstruct valid SQL query from AST when back ticks are used - Hive - [issue]
...Hive-6013 have introduced a parser rule that removes all the`from identifiers or query alias, this can result in some issue when we need to reconstruct the actual SQL query from the AST.To r...    Author: slim bouguerra , 2019-04-29, 23:30
[expand - 4 more] - Hive Pulsar Integration - Hive - [mail # dev]
...HiHere is where you can add that logic where you want to send to a giventopic.
   Author: Slim Bouguerra , 2019-04-29, 14:24
[HIVE-21621] Update Kafka Clients to recent release 2.2.0 - Hive - [issue]
...all in the title update Kafka Storage Handler to the most recent clients library....    Author: slim bouguerra , 2019-04-25, 23:00
[CALCITE-2358] Use null literal instead of empty string as argument for timestamp_parse Druid expression - Calcite - [issue]
...With the new ability to support null values in Druid, empty string is not equal to null anymore.To enable auto format parser timestamp_parse Druid function expects null literal as forma...    Author: slim bouguerra , 2019-04-13, 14:29
[HIVE-21332] Cache Purge command does purge the in-use buffer. - Hive - [issue]
...Cache Purge command, is purging what is not suppose to evict.This can lead to unrecoverable state. TaskAttempt 3 failed, info=[Error: Error while running task ( failure ) : attempt_1545...    Author: slim bouguerra , 2019-02-28, 06:17
[HIVE-21334] Eviction of blocks is major source of blockage for allocation request. Allocation path need to be lock-free. - Hive - [issue]
...Eviction is getting in the way of memory allocation when the query fragment has no cache entry.This is cause major bottleneck and waist lot of cpu cycles.To fix this is first we can batch th...    Author: slim bouguerra , 2019-02-27, 17:42
[CALCITE-2175] Revisit the assumption made by druid calcite adapter that there is only one timestamp column - Calcite - [issue]
...Currently, the Druid Calcite adapter assumes that the row returned by druid has only one timestamp typed column, this is not true, in fact, we can have multiple projections of the time colum...    Author: slim bouguerra , 2019-02-22, 01:20
[CALCITE-2121] CAST timestamp with time zone to SQL VARCHAR - Calcite - [issue]
...Running the following test  at org.apache.calcite.test.DruidAdapterIT@Test  public void testCastTimestampWithTimeZone() {    final String sql = "SELECT CAST(\"timestamp\"...    Author: slim bouguerra , 2019-02-22, 01:20