GitHub user ueshin opened a pull request:
https://github.com/apache/spark/pull/18655
[SPARK-21440][SQL][PYSPARK] Refactor ArrowConverters and add DecimalType,
ArrayType and StructType support.
## What changes were proposed in this pull request?
This is a refactoring of `ArrowConverters` and related classes.
1. Introduce `ArrowColumnVector` to read Arrow data in Java.
2. Refactor `ColumnWriter` as `ArrowWriter`.
3. Add `DecimalType`, `ArrayType` and `StructType` support.
4. Refactor `ArrowConverters` to skip intermediate `ArrowRecordBatch`
creation.
## How was this patch tested?
Added some tests and existing tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ueshin/apache-spark issues/SPARK-21440
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18655.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #18655
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commit 1439fe6d320208ccb565d18fc4b7485210068330
Author: Takuya UESHIN <ues...@databricks.com>
Date: 2017-07-13T08:45:33Z
Introduce ArrowWriter and ArrowColumnVector.
commit 6fcf700d381a18704b3ee485083ee51c82bbd2f8
Author: Takuya UESHIN <ues...@databricks.com>
Date: 2017-07-14T05:48:33Z
Use ArrowWriter for ArrowConverters.
commit 579def2db0a0f015760a458032d3bd916669201c
Author: Takuya UESHIN <ues...@databricks.com>
Date: 2017-07-14T09:42:32Z
Refactor ArrowConverters.
commit 58cd46506b02800269380f7c8acb5f9825664cad
Author: Takuya UESHIN <ues...@databricks.com>
Date: 2017-07-17T06:30:17Z
Move releasing memory into task completion listener.
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