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2018-10-27 Thread dongjoon-hyun
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2018-10-26 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 Sure, let me close this --- - To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail:

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2018-10-23 Thread dongjoon-hyun
Github user dongjoon-hyun commented on the issue: https://github.com/apache/spark/pull/19601 Hi, @kiszk . Can we close this for now? You can make another PR later if you want. --- - To unsubscribe, e-mail:

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2018-10-02 Thread dongjoon-hyun
Github user dongjoon-hyun commented on the issue: https://github.com/apache/spark/pull/19601 Hi, @kiszk . Is this still valid? --- - To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional

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2017-11-27 Thread kiszk
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2017-11-16 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 I see. Let us revisit this design later. I would appreciate it if you would review this columnar cache reader with simple primitive-type (non-nested) array. ---

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2017-11-16 Thread cloud-fan
Github user cloud-fan commented on the issue: https://github.com/apache/spark/pull/19601 We'd need to change the `UnsafeArrayData` format too, to avoid data copying when building the cache. BTW I think it's ok to release this columnar cache reader without efficient complex type

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2017-11-16 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 There are some parts that relies on the format of `UnsafeArrayData`. I mean that bit-by-bit copy of `UnsafeArrayData` is performed. Can we handle this copy using the new format for an unsafe array?

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2017-11-16 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 This approach also works for nested array. I have this implementation in my machine. For ease of review, I commit the version of only primitive type array support. If you like it, I can commit the

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2017-11-16 Thread cloud-fan
Github user cloud-fan commented on the issue: https://github.com/apache/spark/pull/19601 Does it work for non-top-level array type fields and nested array? Generally I think this is not the right direction. The root cause is that, table cache array format is not the arrow-style

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2017-11-15 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 @cloud-fan could you please review this again? I merged with the `ColumnarArray`. As you suggested, the latest implementation does not change `ColumnVector` and `ColumnarArray`. ---

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2017-11-10 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 @cloud-fan could you please review this again? Now, this PR does not apply any change to `ColumnVector` and `WritableColumnVector`. ---

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2017-11-05 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 @cloud-fan could you please review this again since this version avoids to override `ColumnVector.getArray` as you suggested? cc @ueshin ---

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2017-11-02 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 My prototype for nested array can handle nested array by changing `UnsafeArray.getArray` and its callee methods, and does not require to change `ColumnVector`. If the refactoring takes more

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2017-11-02 Thread cloud-fan
Github user cloud-fan commented on the issue: https://github.com/apache/spark/pull/19601 can we hold it for a while? I'm thinking about ColumnVector refactoring and see how to deal with nested data uniformly. --- -

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2017-11-02 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 @cloud-fan could you please review this PR? In my prototype, I succeeded to support a current nested array for table cache by changing only UnsafeColumnVector.java. For ease of review, I

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2017-11-02 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 @cloud-fan could you please review this PR? In my prototype, I succeeded to support a current nested array for table cache by changing only `UnsafeColumnVector.java`. For ease of review,

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[GitHub] spark issue #19601: [SPARK-22383][SQL] Generate code to directly get value o...

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[GitHub] spark issue #19601: [SPARK-22383][SQL] Generate code to directly get value o...

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[GitHub] spark issue #19601: [SPARK-22383][SQL] Generate code to directly get value o...

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2017-10-29 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 After I think about the choice for a while, I conclude that it is better to add the new `WritableColumnVector` (i.e. `UnsafeColumnVector`) and to keep the current `ColumnVector.Array`. I think

[GitHub] spark issue #19601: [SPARK-22383][SQL] Generate code to directly get value o...

2017-10-29 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 For now, this implementation has an limitation only to support non-nested array for ease of review. --- - To unsubscribe, e-mail:

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2017-10-29 Thread cloud-fan
Github user cloud-fan commented on the issue: https://github.com/apache/spark/pull/19601 both ways work, just pick the simpler one. I'm concerned about how to access the nested array, you can try both approaches and see which one can solve the problem easier. ---

[GitHub] spark issue #19601: [SPARK-22383][SQL] Generate code to directly get value o...

2017-10-29 Thread kiszk
Github user kiszk commented on the issue: https://github.com/apache/spark/pull/19601 I agree with you that we need to improve the write path. It will be addressed after improving the frequently-executed read path, as you suggested before. It will be addressed by the following PR.

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