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Posted to issues@spark.apache.org by "Hyukjin Kwon (JIRA)" <ji...@apache.org> on 2019/05/21 04:11:07 UTC
[jira] [Resolved] (SPARK-20734) Structured Streaming
spark.sql.streaming.schemaInference not handling schema changes
[ https://issues.apache.org/jira/browse/SPARK-20734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hyukjin Kwon resolved SPARK-20734.
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Resolution: Incomplete
> Structured Streaming spark.sql.streaming.schemaInference not handling schema changes
> ------------------------------------------------------------------------------------
>
> Key: SPARK-20734
> URL: https://issues.apache.org/jira/browse/SPARK-20734
> Project: Spark
> Issue Type: New Feature
> Components: Structured Streaming
> Affects Versions: 2.1.1
> Reporter: Ram
> Priority: Major
> Labels: bulk-closed
>
> sparkSession.config("spark.sql.streaming.schemaInference", true).getOrCreate();
> Dataset<Row> dataset = sparkSession.readStream().parquet("file:/files-to-process");
> StreamingQuery streamingQuery =
> dataset.writeStream().option("checkpointLocation", "file:/checkpoint-location")
> .outputMode(Append()).start("file:/save-parquet-files");
> streamingQuery.awaitTermination();
> After streaming query started If there's a schema changes on new paruet files under files-to-process directory. Structured Streaming not writing new schema changes. Is it possible to handle these schema changes in Structured Streaming.
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