You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@arrow.apache.org by "Sascha Hofmann (JIRA)" <ji...@apache.org> on 2019/07/26 10:47:00 UTC
[jira] [Updated] (ARROW-6046) Slice RecordBatch of String array
with offset 0 returns whole batch
[ https://issues.apache.org/jira/browse/ARROW-6046?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sascha Hofmann updated ARROW-6046:
----------------------------------
Summary: Slice RecordBatch of String array with offset 0 returns whole batch (was: Slice RecordBatch of String array with offset 0)
> Slice RecordBatch of String array with offset 0 returns whole batch
> -------------------------------------------------------------------
>
> Key: ARROW-6046
> URL: https://issues.apache.org/jira/browse/ARROW-6046
> Project: Apache Arrow
> Issue Type: Bug
> Components: C++, Python
> Affects Versions: 0.14.1
> Reporter: Sascha Hofmann
> Priority: Blocker
>
> We are seeing a very similar bug as in ARROW-809, just for a RecordBatch of strings. A slice of a RecordBatch with a string column and offset =0 returns the whole batch instead.
>
> {code:java}
> import pandas as pd
> import pyarrow as pa
> df = pd.DataFrame({ 'b': ['test' for x in range(1000_000)]})
> tbl = pa.Table.from_pandas(df)
> batch = tbl.to_batches()[0]
> batch.slice(0,2).serialize().size
> # 4000232
> batch.slice(1,2).serialize().size
> # 240
> {code}
>
--
This message was sent by Atlassian JIRA
(v7.6.14#76016)