THUMarkLau commented on code in PR #12476:
URL: https://github.com/apache/iotdb/pull/12476#discussion_r1630743958
##########
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/wal/io/WALInputStream.java:
##########
@@ -250,10 +250,14 @@ public void skipToGivenPosition(long pos) throws
IOException {
buffer.clear();
channel.read(buffer);
buffer.flip();
- buffer.get();
+ CompressionType type = CompressionType.deserialize(buffer.get());
currSegmentSize = buffer.getInt();
if (posRemain >= currSegmentSize) {
posRemain -= currSegmentSize;
+ channel.position(
+ channel.position()
+ + currSegmentSize
+ + (type == CompressionType.UNCOMPRESSED ? 0 :
Integer.BYTES));
Review Comment:
No. posRemain is a logical size, not a physical size. It represents the
offset of the WAL before compression, so you only need to subtract the
originalSegmentSize.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
