[jira] [Updated] (SPARK-56637) Variant getFieldByKey() on large objects silently fails if variant metadata is unsorted

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-56637?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated SPARK-56637:
-----------------------------------
    Labels: pull-request-available  (was: )

> Variant getFieldByKey() on large objects silently fails if variant metadata is unsorted
> ---------------------------------------------------------------------------------------
>
>                 Key: SPARK-56637
>                 URL: https://issues.apache.org/jira/browse/SPARK-56637
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 4.2.0
>            Reporter: Steve Loughran
>            Priority: Major
>              Labels: pull-request-available
>
> Variant method getFieldByKey(String key) looks up a key by simple walk if key count < 32, binary search if above that. But the binary search assumes the metadata is sorted. This is optional according to the format spec; there's a bit in the variant to indicate whether or not a variant's metadata is unsorted
> Spark Variant class must do a full scan on unsorted variants. (that's ignoring the performance penalty of the scans); iceberg has adopted and parquet is adopting caching there.
> Parquet has it's own version of this bug, https://github.com/apache/parquet-java/issues/3529



--
This message was sent by Atlassian Jira
(v8.20.10#820010)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org