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Eric Liang edited comment on SPARK-20450 at 4/24/17 7:40 PM: ------------------------------------------------------------- I'm not sure what you mean by new issue, but it's only in the latest 2.1.1 RC afaik. It was not present in the original 2.1 was (Author: ekhliang): I'm not sure what you mean by new issue, but it's only in the latest 2.1.1 release afaik. It was not present in the original 2.1 > Unexpected first-query schema inference cost with 2.1.1 RC > ---------------------------------------------------------- > > Key: SPARK-20450 > URL: https://issues.apache.org/jira/browse/SPARK-20450 > Project: Spark > Issue Type: Bug > Components: SQL > Affects Versions: 2.1.1 > Reporter: Eric Liang > > https://issues.apache.org/jira/browse/SPARK-19611 fixes a regression from 2.0 > where Spark silently fails to read case-sensitive fields missing a > case-sensitive schema in the table properties. The fix is to detect this > situation, infer the schema, and write the case-sensitive schema into the > metastore. > However this can incur an unexpected performance hit the first time such a > problematic table is queried (and there is a high false-positive rate here > since most tables don't actually have case-sensitive fields). -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org