Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18632#discussion_r127904688
--- Diff:
sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/codegen/UnsafeRowWriter.java
---
@@ -51,6 +51,7 @@ public UnsafeRowWriter(BufferHolder holder, int
numFields) {
this.nullBitsSize = UnsafeRow.calculateBitSetWidthInBytes(numFields);
this.fixedSize = nullBitsSize + 8 * numFields;
this.startingOffset = holder.cursor;
+ holder.reset();
--- End diff --
I think we don't guarantee all the calls to this `UnsafeRowWriter`
constructor are at the timing of new incoming record. It could be possible that
we pass a `BufferHolder` into this constructor but the holder is already
written with some data and we want to continue writing from current cursor.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
