Github user tedyu commented on the pull request:
https://github.com/apache/spark/pull/5725#issuecomment-97511381
<sup>**[sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/UnsafeFixedWidthAggregationMap.java,
line 133
\[r14\]](https://reviewable.io:443/reviews/apache/spark/5725#-Jo56lmUPtN4oJEAxApu)**
([raw
file](https://github.com/apache/spark/blob/eeee512bd94d463f741170e904ae186e238f997c/sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/UnsafeFixedWidthAggregationMap.java#L133)):</sup>
Please include writtenLength, unsafeRow.length and javaRow in the assertion
so that we have more information when debugging.
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<sup>**[sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/UnsafeRow.java,
line 148
\[r14\]](https://reviewable.io:443/reviews/apache/spark/5725#-Jo57pOAjJQa1nPxxd2y)**
([raw
file](https://github.com/apache/spark/blob/eeee512bd94d463f741170e904ae186e238f997c/sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/UnsafeRow.java#L148)):</sup>
Condition doesn't match assertion message w.r.t. <=
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<sup>**[unsafe/src/main/java/org/apache/spark/unsafe/array/ByteArrayMethods.java,
line 23
\[r14\]](https://reviewable.io:443/reviews/apache/spark/5725#-Jo5AmeniFC0_bDQdiyb)**
([raw
file](https://github.com/apache/spark/blob/eeee512bd94d463f741170e904ae186e238f997c/unsafe/src/main/java/org/apache/spark/unsafe/array/ByteArrayMethods.java#L23)):</sup>
Declare this class static ?
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<sup>**[unsafe/src/main/java/org/apache/spark/unsafe/array/LongArray.java,
line 26
\[r14\]](https://reviewable.io:443/reviews/apache/spark/5725#-Jo5B0VcBmjKX4TnrZD7)**
([raw
file](https://github.com/apache/spark/blob/eeee512bd94d463f741170e904ae186e238f997c/unsafe/src/main/java/org/apache/spark/unsafe/array/LongArray.java#L26)):</sup>
nit: in-heap -> on-heap
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<sup>**[unsafe/src/main/java/org/apache/spark/unsafe/bitset/BitSet.java,
line 24
\[r14\]](https://reviewable.io:443/reviews/apache/spark/5725#-Jo5BT5TTxBoPNV_juFI)**
([raw
file](https://github.com/apache/spark/blob/eeee512bd94d463f741170e904ae186e238f997c/unsafe/src/main/java/org/apache/spark/unsafe/bitset/BitSet.java#L24)):</sup>
https://docs.oracle.com/javase/7/docs/api/java/util/BitSet.html doesn't
serve your needs ?
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<sup>**[unsafe/src/main/java/org/apache/spark/unsafe/bitset/BitSetMethods.java,
line 75
\[r14\]](https://reviewable.io:443/reviews/apache/spark/5725#-Jo5C4Ty7HYh-hvVPSEb)**
([raw
file](https://github.com/apache/spark/blob/eeee512bd94d463f741170e904ae186e238f997c/unsafe/src/main/java/org/apache/spark/unsafe/bitset/BitSetMethods.java#L75)):</sup>
Maybe use something similar to
http://www.docjar.com/docs/api/sun/misc/Unsafe.html#getInt(Object, long) for
speedup ?
---
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