rdblue commented on code in PR #18544:
URL: https://github.com/apache/iceberg/pull/18544#discussion_r4351845836
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core/src/main/java/org/apache/iceberg/mumbling/MumblingBitmap.java:
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@@ -51,23 +64,23 @@ class MumblingBitmap implements ManifestBitmap {
private volatile int[] offsets = null;
MumblingBitmap(ByteBuffer data) {
- int version = data.get(data.position()) & 0xFF;
+ int version = ByteBuffers.readByte(data, 0);
if (version != VERSION) {
throw new UnsupportedOperationException("Unsupported Mumbling bitmap
version: " + version);
}
this.data = data;
- this.cardinality =
- (data.get(data.position() + 1) & 0xFF)
- | ((data.get(data.position() + 2) & 0xFF) << 8)
- | ((data.get(data.position() + 3) & 0xFF) << 16);
- this.containerCount =
- (data.get(data.position() + 4) & 0xFF) | ((data.get(data.position() +
5) & 0xFF) << 8);
+ this.cardinality = ByteBuffers.readLittleEndianUnsigned(data, 1, 3);
+ this.containerCount = ByteBuffers.readLittleEndianUnsigned(data, 4, 2);
Preconditions.checkState(
- containerCount <= 8192, "Invalid container count: %s > 8,192 (max)",
containerCount);
+ containerCount < MAX_CONTAINER_COUNT,
Review Comment:
Yeah, I think this is right.
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