Github user rdblue commented on a diff in the pull request:
https://github.com/apache/spark/pull/13389#discussion_r69158244
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/parquet/CatalystWriteSupport.scala
---
@@ -150,7 +150,8 @@ private[parquet] class CatalystWriteSupport extends
WriteSupport[InternalRow] wi
case StringType =>
(row: SpecializedGetters, ordinal: Int) =>
-
recordConsumer.addBinary(Binary.fromByteArray(row.getUTF8String(ordinal).getBytes))
+ recordConsumer.addBinary(
+
Binary.fromReusedByteArray(row.getUTF8String(ordinal).getBytes))
--- End diff --
If you're converting from a `String`, you can use `Binary.fromString`,
which sets the reuse flag correctly. It looks like this should be using the
"constant" variant, which signals to Parquet that the underlying bytes won't be
changed by the program after they have been passed to Parquet.
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