MaxGekk opened a new pull request #23345: [SPARK-26384][SQL] Propagate SQL configs for CSV schema inferring URL: https://github.com/apache/spark/pull/23345 ## What changes were proposed in this pull request? Currently, SQL configs are not propagated to executors while schema inferring in CSV datasource. For example, changing of `spark.sql.legacy.timeParser.enabled` does not impact on inferring timestamp types. In the PR, I propose to fix the issue by wrapping schema inferring action using `SQLExecution.withSQLConfPropagated`. ## How was this patch tested? Added logging to `TimestampFormatter`: ```patch -object TimestampFormatter { +object TimestampFormatter extends Logging { def apply(format: String, timeZone: TimeZone, locale: Locale): TimestampFormatter = { if (SQLConf.get.legacyTimeParserEnabled) { + logError("LegacyFallbackTimestampFormatter is being used") new LegacyFallbackTimestampFormatter(format, timeZone, locale) } else { + logError("Iso8601TimestampFormatter is being used") new Iso8601TimestampFormatter(format, timeZone, locale) } } ``` and run the command in `spark-shell`: ```shell $ ./bin/spark-shell --conf spark.sql.legacy.timeParser.enabled=true ``` ```scala scala> Seq("2010|10|10").toDF.repartition(1).write.mode("overwrite").text("/tmp/foo") scala> spark.read.option("inferSchema", "true").option("header", "false").option("timestampFormat", "yyyy|MM|dd").csv("/tmp/foo").printSchema() 18/12/18 10:47:27 ERROR TimestampFormatter: LegacyFallbackTimestampFormatter is being used root |-- _c0: timestamp (nullable = true) ```
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
