[jira] [Created] (ARROW-16852) [C++] Migrate SCALAR_AGGREGATE, HASH_AGGREGATE functions to use ExecSpan

2022-06-17 Thread Wes McKinney (Jira)
Wes McKinney created ARROW-16852:


 Summary: [C++] Migrate SCALAR_AGGREGATE, HASH_AGGREGATE functions 
to use ExecSpan
 Key: ARROW-16852
 URL: https://issues.apache.org/jira/browse/ARROW-16852
 Project: Apache Arrow
  Issue Type: Improvement
  Components: C++
Reporter: Wes McKinney
Assignee: Wes McKinney
 Fix For: 9.0.0


Following work in ARROW-16824



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[GitHub] [arrow-adbc] lidavidm opened a new pull request, #24: Add basic transaction semantics

2022-06-17 Thread GitBox


lidavidm opened a new pull request, #24:
URL: https://github.com/apache/arrow-adbc/pull/24

   Clarify that autocommit is the default, add an option to disable it, and add 
an explicit commit.
   
   Though, this is all not currently implemented.
   
   Fixes #23.


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[GitHub] [arrow-adbc] lidavidm commented on pull request #18: Add table/column reflection

2022-06-17 Thread GitBox


lidavidm commented on PR #18:
URL: https://github.com/apache/arrow-adbc/pull/18#issuecomment-1159135921

   Implemented for SQLite. It's a little tedious to implement for SQLite but 
isn't especially complicated, at least.


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[jira] [Created] (ARROW-16851) [CI][SPARK] Nightlies test "test-conda-python-3.9-spark-master" failing

2022-06-17 Thread Larry White (Jira)
Larry White created ARROW-16851:
---

 Summary: [CI][SPARK] Nightlies test 
"test-conda-python-3.9-spark-master" failing  
 Key: ARROW-16851
 URL: https://issues.apache.org/jira/browse/ARROW-16851
 Project: Apache Arrow
  Issue Type: Improvement
  Components: Python
Affects Versions: 9.0.0
Reporter: Larry White


test-conda-python-3.9-spark-master failing commit 
[d89c0b4|https://github.com/apache/arrow/commit/d89c0b4aadecd09dbeb8051688f347c9d0af89ad]

{{Error:  Failed to execute goal 
net.alchim31.maven:scala-maven-plugin:4.6.2:compile (scala-compile-first) on 
project spark-tags_2.12: Execution scala-compile-first of goal 
net.alchim31.maven:scala-maven-plugin:4.6.2:compile failed: rt.jar (class 
sbt.internal.inc.DummyVirtualFile) is not supported -> [Help 1]}}

- Error message reported at: 
https://github.com/ursacomputing/crossbow/runs/6929559148?check_suite_focus=true#step:5:11193

See also: 
[https://bytemeta.vip/repo/davidB/scala-maven-plugin/issues/615#google_vignette]
 for a discussion of similar/same? issue involving Spark and vip.

[~LuciferYang] Is this something you can comment on? Thanks very much. 



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[jira] [Created] (ARROW-16850) [C++] Improve csv writer by copying data and delimiter separately

2022-06-17 Thread Yibo Cai (Jira)
Yibo Cai created ARROW-16850:


 Summary: [C++] Improve csv writer by copying data and delimiter 
separately
 Key: ARROW-16850
 URL: https://issues.apache.org/jira/browse/ARROW-16850
 Project: Apache Arrow
  Issue Type: Improvement
  Components: C++
Reporter: Yibo Cai
Assignee: Yibo Cai


Profiling csv writer with Arm Statistical Profiling Extension (SPE) reveals 
there is relatively high branch misprediction rate from {{memcpy}}, due to 
interleaving copying data field and delimiter which is very short(1 or 2 
chars). Copying delimiter with specific code, {{memcpy}} only the data field 
improves performance significantly.



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[jira] [Created] (ARROW-16849) [C++][compute] Replace If-Else branch with bitwise operators in aggregate_basic_internal

2022-06-17 Thread xiangxiang Shen (Jira)
xiangxiang Shen created ARROW-16849:
---

 Summary: [C++][compute] Replace If-Else branch with bitwise 
operators in aggregate_basic_internal
 Key: ARROW-16849
 URL: https://issues.apache.org/jira/browse/ARROW-16849
 Project: Apache Arrow
  Issue Type: Improvement
  Components: C++
Reporter: xiangxiang Shen


[https://github.com/apache/arrow/blob/8737123019ecb49e1670ea7b94b02404dc3709b5/cpp/src/arrow/compute/kernels/aggregate_basic_internal.h#L189-L193]

 
Here, can use bitwise operators to avoid If-Else branch and improve computation 
performance.
h4.



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