[SPARK-27858][SQL] Fix for avro deserialization on union types with multiple non-null types - #562
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…ultiple non-null types ## What changes were proposed in this pull request? This PR aims to fix an issue on a union avro type with more than one non-null value (for instance `["string", "null", "int"]`) whose the deserialization to a DataFrame would throw a `java.lang.ArrayIndexOutOfBoundsException`. The issue was that the `fieldWriter` relied on the index from the avro schema before nulls were filtered out. ## How was this patch tested? A test for the case of multiple non-null values was added and the tests were run using sbt by running `testOnly org.apache.spark.sql.avro.AvroSuite` Closes apache#24722 from gcmerz/master. Authored-by: Gabbi Merz <gmerz@palantir.com> Signed-off-by: Dongjoon Hyun <dhyun@apple.com>
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mccheah
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May 28, 2019
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What changes were proposed in this pull request?
This PR aims to fix an issue on a union avro type with more than one non-null value (for instance ["string", "null", "int"]) whose the deserialization to a DataFrame would throw a java.lang.ArrayIndexOutOfBoundsException. The issue was that the fieldWriter relied on the index from the avro schema before nulls were filtered out.
How was this patch tested?
A test for the case of multiple non-null values was added and the tests were run using sbt by running testOnly org.apache.spark.sql.avro.AvroSuite