belugabehr commented on a change in pull request #754:
URL: https://github.com/apache/orc/pull/754#discussion_r671935567
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File path: java/core/src/java/org/apache/orc/impl/DynamicByteArray.java
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@@ -294,6 +295,16 @@ public void setByteBuffer(ByteBuffer result, int offset,
int length) {
return result;
}
+ public ByteBuffer get(int offset, int length) {
+ final int currentChunk = offset / chunkSize;
+ final int currentOffset = offset % chunkSize;
+ final int currentLength = Math.min(length, chunkSize - currentOffset);
+ if (currentLength == length) {
+ return ByteBuffer.wrap(data[currentChunk], currentOffset, length);
Review comment:
This is the "win" right here. If the data requested is contiguous
within a single data chunk, then a view to the data can be returned without
needing to copy into a buffer.
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