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[SPARK-16962][CORE][SQL] Fix misaligned record accesses for SPARC architectures
## What changes were proposed in this pull request? Made changes to record length offsets to make them uniform throughout various areas of Spark core and unsafe ## How was this patch tested? This change affects only SPARC architectures and was tested on X86 architectures as well for regression. Author: sumansomasundar <suman.somasundar@oracle.com> Closes #14762 from sumansomasundar/master.
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- common/unsafe/src/main/java/org/apache/spark/unsafe/UnsafeAlignedOffset.java 58 additions, 0 deletions...ain/java/org/apache/spark/unsafe/UnsafeAlignedOffset.java
- common/unsafe/src/main/java/org/apache/spark/unsafe/array/ByteArrayMethods.java 24 additions, 7 deletions.../java/org/apache/spark/unsafe/array/ByteArrayMethods.java
- core/src/main/java/org/apache/spark/unsafe/map/BytesToBytesMap.java 31 additions, 26 deletions...ain/java/org/apache/spark/unsafe/map/BytesToBytesMap.java
- core/src/main/java/org/apache/spark/util/collection/unsafe/sort/UnsafeExternalSorter.java 11 additions, 8 deletions...ark/util/collection/unsafe/sort/UnsafeExternalSorter.java
- core/src/main/java/org/apache/spark/util/collection/unsafe/sort/UnsafeInMemorySorter.java 10 additions, 4 deletions...ark/util/collection/unsafe/sort/UnsafeInMemorySorter.java
- sql/core/src/main/scala/org/apache/spark/sql/execution/columnar/compression/CompressibleColumnBuilder.scala 10 additions, 1 deletion...tion/columnar/compression/CompressibleColumnBuilder.scala
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