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Maarten Breddels commented on ARROW-13546:
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My current workaround, to make it backward
Maarten Breddels created ARROW-13546:
Summary: [Python] Breaking API change in FSSpecHandler, requires
metadata argument
Key: ARROW-13546
URL: https://issues.apache.org/jira/browse/ARROW-13546
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https://issues.apache.org/jira/browse/ARROW-13259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17374890#comment-17374890
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Maarten Breddels commented on ARROW-13259:
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Does my comment
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Maarten Breddels commented on ARROW-12608:
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I agree a split_pattern_regex might make sense, you
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Maarten Breddels commented on ARROW-12547:
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I recommend trying without memory mapping. If IO
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https://issues.apache.org/jira/browse/ARROW-3016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17286400#comment-17286400
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Maarten Breddels commented on ARROW-3016:
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I'd also recommend using perf with uprobes for this,
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https://issues.apache.org/jira/browse/ARROW-11000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17253047#comment-17253047
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Maarten Breddels commented on ARROW-11000:
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did you check with passing
Maarten Breddels created ARROW-10959:
Summary: [C++] Add scalar string join kernel
Key: ARROW-10959
URL: https://issues.apache.org/jira/browse/ARROW-10959
Project: Apache Arrow
Issue
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https://issues.apache.org/jira/browse/ARROW-10557?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17251793#comment-17251793
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Maarten Breddels commented on ARROW-10557:
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This would be easier to implement using the tools
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https://issues.apache.org/jira/browse/ARROW-10799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17243437#comment-17243437
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Maarten Breddels commented on ARROW-10799:
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Would you mind opening a draft PR for that, in case
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Maarten Breddels commented on ARROW-10799:
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Ah yes, that implementation makes sense. I saw the
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Maarten Breddels commented on ARROW-10799:
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{code:java}
import pyarrow as pa
a = pa.array(['a']
Maarten Breddels created ARROW-10799:
Summary: [C++] Take on string chunked arrays slow and fails
Key: ARROW-10799
URL: https://issues.apache.org/jira/browse/ARROW-10799
Project: Apache Arrow
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https://issues.apache.org/jira/browse/ARROW-10739?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17239312#comment-17239312
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Maarten Breddels commented on ARROW-10739:
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Ok, good to know.
Two workarounds I came up with
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https://issues.apache.org/jira/browse/ARROW-10736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17239305#comment-17239305
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Maarten Breddels commented on ARROW-10736:
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Thanks, I tried scan with an empty schema on the
Maarten Breddels created ARROW-10739:
Summary: [Python] Pickling a sliced array serializes all the
buffers
Key: ARROW-10739
URL: https://issues.apache.org/jira/browse/ARROW-10739
Project: Apache
Maarten Breddels created ARROW-10736:
Summary: [Python] feather/arrow row splitting and counting
(Dataset API)
Key: ARROW-10736
URL: https://issues.apache.org/jira/browse/ARROW-10736
Project:
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https://issues.apache.org/jira/browse/ARROW-10709?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17238106#comment-17238106
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Maarten Breddels commented on ARROW-10709:
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Pandas also does not like it when .read returns a
Maarten Breddels created ARROW-10709:
Summary: [Python] Difficult to make an efficient zero-copy file
reader in Python
Key: ARROW-10709
URL: https://issues.apache.org/jira/browse/ARROW-10709
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https://issues.apache.org/jira/browse/ARROW-10640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17235563#comment-17235563
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Maarten Breddels commented on ARROW-10640:
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Yes, that would maybe be the 'ultimate' variant,
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Maarten Breddels commented on ARROW-10640:
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Another idea would be to have a 'choose' like
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https://issues.apache.org/jira/browse/ARROW-9489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17229989#comment-17229989
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Maarten Breddels commented on ARROW-9489:
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Yes, I thought about that too. Although I think a
Maarten Breddels created ARROW-10557:
Summary: [C++] Add scalar string slicing/substring kernel
Key: ARROW-10557
URL: https://issues.apache.org/jira/browse/ARROW-10557
Project: Apache Arrow
Maarten Breddels created ARROW-10556:
Summary: [C++] Caching pre computed data based on FunctionOptions
in the kernel state
Key: ARROW-10556
URL: https://issues.apache.org/jira/browse/ARROW-10556
Maarten Breddels created ARROW-10541:
Summary: [C++] Add re2 library to core arrow / ARROW_WITH_RE2
Key: ARROW-10541
URL: https://issues.apache.org/jira/browse/ARROW-10541
Project: Apache Arrow
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https://issues.apache.org/jira/browse/ARROW-9489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17226572#comment-17226572
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Maarten Breddels commented on ARROW-9489:
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Yes, happy to take this on, since it's an ugly code
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Maarten Breddels reassigned ARROW-9128:
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Assignee: Maarten Breddels
> [C++] Implement string space trimming kernels: trim,
Maarten Breddels created ARROW-10306:
Summary: [C++] Add string replacement kernel
Key: ARROW-10306
URL: https://issues.apache.org/jira/browse/ARROW-10306
Project: Apache Arrow
Issue
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https://issues.apache.org/jira/browse/ARROW-9128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17213857#comment-17213857
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Maarten Breddels commented on ARROW-9128:
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Shall I implement this?
> [C++] Implement string
Maarten Breddels created ARROW-10209:
Summary: [Python] support positional arguments for options in
compute wrapper
Key: ARROW-10209
URL: https://issues.apache.org/jira/browse/ARROW-10209
Maarten Breddels created ARROW-10208:
Summary: [C++] comparing list arrays with nulls fails in test
framework
Key: ARROW-10208
URL: https://issues.apache.org/jira/browse/ARROW-10208
Project:
Maarten Breddels created ARROW-10207:
Summary: C++] Unary kernels that results in a list have no
preallocated offset buffer
Key: ARROW-10207
URL: https://issues.apache.org/jira/browse/ARROW-10207
Maarten Breddels created ARROW-10195:
Summary: [C++] Add string struct extract kernel using re2
Key: ARROW-10195
URL: https://issues.apache.org/jira/browse/ARROW-10195
Project: Apache Arrow
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https://issues.apache.org/jira/browse/ARROW-10023?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17197892#comment-17197892
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Maarten Breddels commented on ARROW-10023:
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It's gonna be in C++, I can push an initial version
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https://issues.apache.org/jira/browse/ARROW-9991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17196786#comment-17196786
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Maarten Breddels commented on ARROW-9991:
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Indeed, and whatever Unicode specifies as 'whitespace'
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Maarten Breddels commented on ARROW-10023:
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Probably related to
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https://issues.apache.org/jira/browse/ARROW-9991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maarten Breddels updated ARROW-9991:
Summary: [C++] split kernels for strings/binary (was: [C++] split kernsl
for
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https://issues.apache.org/jira/browse/ARROW-9991?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maarten Breddels updated ARROW-9991:
Description:
Similar to Python str.split and bytes.split, we'd like to have a way to
Maarten Breddels created ARROW-9991:
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Summary: [C++] split kernsl for strings/binary
Key: ARROW-9991
URL: https://issues.apache.org/jira/browse/ARROW-9991
Project: Apache Arrow
Issue Type:
Maarten Breddels created ARROW-9471:
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Summary: [C++] Scan Dataset in reverse
Key: ARROW-9471
URL: https://issues.apache.org/jira/browse/ARROW-9471
Project: Apache Arrow
Issue Type:
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https://issues.apache.org/jira/browse/ARROW-9458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17157387#comment-17157387
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Maarten Breddels commented on ARROW-9458:
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let me know if you want to do the honors yourself,
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https://issues.apache.org/jira/browse/ARROW-9458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17157374#comment-17157374
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Maarten Breddels commented on ARROW-9458:
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Indeed, seeing a massive speedup. Too bad py-spy
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Maarten Breddels commented on ARROW-9458:
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Did you set ?
batch_size=1_000_000
> [Python] Dataset
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https://issues.apache.org/jira/browse/ARROW-9458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17157338#comment-17157338
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Maarten Breddels commented on ARROW-9458:
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Running this (now with all columns)
{code:java}
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Maarten Breddels updated ARROW-9458:
Attachment: image-2020-07-14-14-38-16-767.png
> [Python] Dataset singlethreaded only
>
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Maarten Breddels updated ARROW-9458:
Attachment: image-2020-07-14-14-31-29-943.png
> [Python] Dataset singlethreaded only
>
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Maarten Breddels closed ARROW-9456.
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Resolution: Not A Bug
> [Python] Dataset segfault when not importing pyarrow.parquet
>
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https://issues.apache.org/jira/browse/ARROW-9456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17157293#comment-17157293
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Maarten Breddels commented on ARROW-9456:
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Note that you should not run the vaex parquet example
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https://issues.apache.org/jira/browse/ARROW-9444?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17157235#comment-17157235
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Maarten Breddels commented on ARROW-9444:
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Feel free to assign to me, I didn't know there was a
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https://issues.apache.org/jira/browse/ARROW-9456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=17157231#comment-17157231
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Maarten Breddels commented on ARROW-9456:
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This file gives me the same problem
{code:java}
import
Maarten Breddels created ARROW-9458:
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Summary: [Python] Dataset singlethreaded only
Key: ARROW-9458
URL: https://issues.apache.org/jira/browse/ARROW-9458
Project: Apache Arrow
Issue Type:
Maarten Breddels created ARROW-9456:
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Summary: [Python] Dataset segfault when not importing
pyarrow.parquet
Key: ARROW-9456
URL: https://issues.apache.org/jira/browse/ARROW-9456
Project: Apache
Maarten Breddels created ARROW-9403:
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Summary: [Python] add .tolist as alias of to_pylist
Key: ARROW-9403
URL: https://issues.apache.org/jira/browse/ARROW-9403
Project: Apache Arrow
Issue
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https://issues.apache.org/jira/browse/ARROW-9403?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maarten Breddels updated ARROW-9403:
Summary: [Python] add .tolist as alias of .to_pylist (was: [Python] add
.tolist as alias
Maarten Breddels created ARROW-9268:
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Summary: [C++] Add is{alnum,alpha,...} kernels for strings
Key: ARROW-9268
URL: https://issues.apache.org/jira/browse/ARROW-9268
Project: Apache Arrow
Maarten Breddels created ARROW-9133:
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Summary: [C++] Add utf8_upper and utf_lower
Key: ARROW-9133
URL: https://issues.apache.org/jira/browse/ARROW-9133
Project: Apache Arrow
Issue Type:
Maarten Breddels created ARROW-9131:
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Summary: [C++] Faster ascii_lower and ascii_upper
Key: ARROW-9131
URL: https://issues.apache.org/jira/browse/ARROW-9131
Project: Apache Arrow
Issue
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