[jira] [Created] (ARROW-1962) [Java] Add reset() to ValueVector interface

Bryan Cutler created ARROW-1962: --- Summary: [Java] Add reset() to ValueVector interface Key: ARROW-1962 URL: https://issues.apache.org/jira/browse/ARROW-1962 Project: Apache Arrow Issue Type:

Re: [DRAFT] Apache Arrow board report

+1. Thanks, Wes. On Tue, Jan 2, 2018 at 12:10 PM, Holden Karau wrote: > Would it make sense to mention the other Apache projects using/planning to > use Arrow? > > On Tue, Jan 2, 2018 at 11:31 AM Li Jin wrote: > > > +1. Thanks Wes! > > > > On Tue,

Re: [DRAFT] Apache Arrow board report

Would it make sense to mention the other Apache projects using/planning to use Arrow? On Tue, Jan 2, 2018 at 11:31 AM Li Jin wrote: > +1. Thanks Wes! > > On Tue, Jan 2, 2018 at 11:19 AM, Uwe L. Korn wrote: > > > +1 > > > > On Tue, Jan 2, 2018, at 4:21

Re: [DRAFT] Apache Arrow board report

+1. Thanks Wes! On Tue, Jan 2, 2018 at 11:19 AM, Uwe L. Korn wrote: > +1 > > On Tue, Jan 2, 2018, at 4:21 PM, Wes McKinney wrote: > > Here is a draft for this quarter's ASF board report. The Activity / > > Health sections are a bit light on detail, if others would like to add

[jira] [Created] (ARROW-1961) [Python] Writing Parquet file with flavor='spark' loses pandas schema metadata

Wes McKinney created ARROW-1961: --- Summary: [Python] Writing Parquet file with flavor='spark' loses pandas schema metadata Key: ARROW-1961 URL: https://issues.apache.org/jira/browse/ARROW-1961 Project:

Re: Is there any way to get data of numeric array like maximum/minimum value?

We are still in the early stages of defining such APIs. See https://github.com/apache/arrow/tree/master/cpp/src/arrow/compute where this code is being written. We would be glad of any additional work or input on the design for the computation APIs - Wes On Tue, Jan 2, 2018 at 10:43 AM, Jin Hai

Re: [DRAFT] Apache Arrow board report

+1 On Tue, Jan 2, 2018, at 4:21 PM, Wes McKinney wrote: > Here is a draft for this quarter's ASF board report. The Activity / > Health sections are a bit light on detail, if others would like to add > some things feel free to send them along. > > thanks > Wes > > ## Description: > > Apache

Re: Is there any way to get data of numeric array like maximum/minimum value?

Cool, do you have any idea how to implement the function in Arrow? Such as create a JIRA ticket and describe the idea? > On 2 Jan 2018, at 11:37 PM, Wes McKinney wrote: > > > Hi Jin, > > If you are reading Parquet files, you can look at the column > statistics for a row

Re: arrow read/write examples in Java

I'll take a look at updating the site docs today. Thanks for pointing this out! On Wed, Dec 27, 2017 at 4:57 AM, Animesh Trivedi wrote: > Hello everyone, > > I solved the issue with my writer. Now everything is working fine, > including HDFS file reads and writes. I

Re: Is there any way to get data of numeric array like maximum/minimum value?

Hi Jin, If you are reading Parquet files, you can look at the column statistics for a row group using the C++ API. We definitely plan to implement functions to compute reduction-based statistics like minimum and maximum from data already in an Arrow array in C++, but it has not been implemented

[DRAFT] Apache Arrow board report

Here is a draft for this quarter's ASF board report. The Activity / Health sections are a bit light on detail, if others would like to add some things feel free to send them along. thanks Wes ## Description: Apache Arrow is a cross-language development platform for in-memory data. It specifies