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Posted to issues@spark.apache.org by "Liang-Chi Hsieh (JIRA)" <ji...@apache.org> on 2018/06/15 10:32:00 UTC
[jira] [Commented] (SPARK-24465) LSHModel should support Structured
Streaming for transform
[ https://issues.apache.org/jira/browse/SPARK-24465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16513649#comment-16513649 ]
Liang-Chi Hsieh commented on SPARK-24465:
-----------------------------------------
I'm not sure if SPARK-12878 is a real issue. Seems to me that it just needs to write nested UDT codes in the working approach.
> LSHModel should support Structured Streaming for transform
> ----------------------------------------------------------
>
> Key: SPARK-24465
> URL: https://issues.apache.org/jira/browse/SPARK-24465
> Project: Spark
> Issue Type: New Feature
> Components: ML
> Affects Versions: 2.4.0
> Reporter: Joseph K. Bradley
> Priority: Major
>
> Locality Sensitive Hashing (LSH) Models (BucketedRandomProjectionLSHModel, MinHashLSHModel) are not compatible with Structured Streaming (and I believe are the final Transformers which are not compatible). These do not work because Spark SQL does not support nested types containing UDTs; see [SPARK-12878].
> This task is to add unit tests for streaming (as in [SPARK-22644]) for LSHModels after [SPARK-12878] has been fixed.
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