Github user kiszk commented on a diff in the pull request:
https://github.com/apache/spark/pull/18503#discussion_r125546491
--- Diff:
sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/FixedLengthRowBasedKeyValueBatch.java
---
@@ -62,7 +62,7 @@ public UnsafeRow appendRow(Object kbase, long koff, int
klen,
keyRowId = numRows;
keyRow.pointTo(base, recordOffset, klen);
- valueRow.pointTo(base, recordOffset + klen, vlen + 4);
+ valueRow.pointTo(base, recordOffset + klen, vlen + 8);
--- End diff --
Line 59 puts long value whose length is 8. In summary, line 57 and 59
consumes `vlen + 8` bytes from `base + recordOffset+ klen`.
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