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https://issues.apache.org/jira/browse/HIVE-23553?focusedWorklogId=545610&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-545610
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ASF GitHub Bot logged work on HIVE-23553:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 01/Feb/21 21:38
Start Date: 01/Feb/21 21:38
Worklog Time Spent: 10m
Work Description: mustafaiman commented on a change in pull request #1823:
URL: https://github.com/apache/hive/pull/1823#discussion_r568157322
##########
File path: common/src/java/org/apache/hadoop/hive/conf/HiveConf.java
##########
@@ -4509,7 +4509,7 @@ private static void populateLlapDaemonVarsSet(Set<String>
llapDaemonVarsSetLocal
"Minimum allocation possible from LLAP buddy allocator. Allocations
below that are\n" +
"padded to minimum allocation. For ORC, should generally be the same
as the expected\n" +
"compression buffer size, or next lowest power of 2. Must be a power
of 2."),
- LLAP_ALLOCATOR_MAX_ALLOC("hive.llap.io.allocator.alloc.max", "16Mb", new
SizeValidator(),
+ LLAP_ALLOCATOR_MAX_ALLOC("hive.llap.io.allocator.alloc.max", "4Mb", new
SizeValidator(),
Review comment:
I still do not understand why we need to change LLAP Allocator's maximum
allocation size. Does LLAP allocator serve only ORC writers? I think it is used
for other buffer needs too.
Hive depends on ORC. So I dont understand how ORC uses
LLAP_ALLOCATOR_MAX_ALLOC for anything. We pass orc writers the appropriate
configs. If ORC writers need smaller buffer, we can configure that for those
writers via WriterOptions. There is no need to change llap allocator's settings
for that.
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Issue Time Tracking
-------------------
Worklog Id: (was: 545610)
Time Spent: 6.5h (was: 6h 20m)
> Upgrade ORC version to 1.6.7
> ----------------------------
>
> Key: HIVE-23553
> URL: https://issues.apache.org/jira/browse/HIVE-23553
> Project: Hive
> Issue Type: Improvement
> Reporter: Panagiotis Garefalakis
> Assignee: Panagiotis Garefalakis
> Priority: Major
> Labels: pull-request-available
> Time Spent: 6.5h
> Remaining Estimate: 0h
>
> Apache Hive is currently on 1.5.X version and in order to take advantage of
> the latest ORC improvements such as column encryption we have to bump to
> 1.6.X.
> https://issues.apache.org/jira/secure/ReleaseNote.jspa?version=12343288&styleName=&projectId=12318320&Create=Create&atl_token=A5KQ-2QAV-T4JA-FDED_4ae78f19321c7fb1e7f337fba1dd90af751d8810_lin
> Even though ORC reader could work out of the box, HIVE LLAP is heavily
> depending on internal ORC APIs e.g., to retrieve and store File Footers,
> Tails, streams – un/compress RG data etc. As there ware many internal changes
> from 1.5 to 1.6 (Input stream offsets, relative BufferChunks etc.) the
> upgrade is not straightforward.
> This Umbrella Jira tracks this upgrade effort.
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