[jira] [Assigned] (SPARK-14832) Refactor DataSource to ensure schema is inferred only once when creating a file stream
[ https://issues.apache.org/jira/browse/SPARK-14832?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Apache Spark reassigned SPARK-14832: Assignee: Apache Spark (was: Tathagata Das) > Refactor DataSource to ensure schema is inferred only once when creating a > file stream > -- > > Key: SPARK-14832 > URL: https://issues.apache.org/jira/browse/SPARK-14832 > Project: Spark > Issue Type: Sub-task > Components: SQL, Streaming >Reporter: Tathagata Das >Assignee: Apache Spark > > When creating a file stream using sqlContext.write.stream(), existing files > are scanned twice for finding the schema > - Once, when creating a DataSource + StreamingRelation in the > DataFrameReader.stream() > - Again, when creating streaming Source from the DataSource, in > DataSource.createSource() > Instead, the schema should be generated only once, at the time of creating > the dataframe, and when the streaming source is created, it should just reuse > that schema -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
[jira] [Assigned] (SPARK-14832) Refactor DataSource to ensure schema is inferred only once when creating a file stream
[ https://issues.apache.org/jira/browse/SPARK-14832?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Apache Spark reassigned SPARK-14832: Assignee: Tathagata Das (was: Apache Spark) > Refactor DataSource to ensure schema is inferred only once when creating a > file stream > -- > > Key: SPARK-14832 > URL: https://issues.apache.org/jira/browse/SPARK-14832 > Project: Spark > Issue Type: Sub-task > Components: SQL, Streaming >Reporter: Tathagata Das >Assignee: Tathagata Das > > When creating a file stream using sqlContext.write.stream(), existing files > are scanned twice for finding the schema > - Once, when creating a DataSource + StreamingRelation in the > DataFrameReader.stream() > - Again, when creating streaming Source from the DataSource, in > DataSource.createSource() > Instead, the schema should be generated only once, at the time of creating > the dataframe, and when the streaming source is created, it should just reuse > that schema -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
