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Michael Allman commented on SPARK-25407: ---------------------------------------- I have a code-complete patch for this bug, but I want to add some code comments before submitting it. > Spark throws a `ParquetDecodingException` when attempting to read a field > from a complex type in certain cases of schema merging > -------------------------------------------------------------------------------------------------------------------------------- > > Key: SPARK-25407 > URL: https://issues.apache.org/jira/browse/SPARK-25407 > Project: Spark > Issue Type: Bug > Components: SQL > Affects Versions: 2.4.0 > Reporter: Michael Allman > Priority: Major > > Spark supports merging schemata across table partitions in which one > partition is missing a subfield that's present in another. However, > attempting to select that missing field with a query that includes a > partition pruning predicate the filters out the partitions that include that > field results in a `ParquetDecodingException` when attempting to get the > query results. > This bug is specifically exercised by the failing (but ignored) test case > https://github.com/apache/spark/blob/f2d35427eedeacceb6edb8a51974a7e8bbb94bc2/sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/parquet/ParquetSchemaPruningSuite.scala#L125-L131. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org