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HBASE-28184 Tailing the WAL is very slow if there are multiple peers #5505

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Merged
shahrs87 merged 3 commits into from
Nov 7, 2023
Merged

HBASE-28184 Tailing the WAL is very slow if there are multiple peers #5505

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HBASE-28184 Tailing the WAL is very slow if there are multiple peers
shahrs87 Nov 6, 2023
7cfc57f
Merge branch 'branch-2.5' of https://github.com/apache/hbase into HBA…
shahrs87 Nov 6, 2023
78a74be
Addressing review comments
shahrs87 Nov 6, 2023
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8 changes: 7 additions & 1 deletion ...server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/WALEntryStream.java
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Expand Up @@ -258,7 +258,13 @@ private void dequeueCurrentLog() throws IOException {
private boolean readNextEntryAndRecordReaderPosition() throws IOException {
Entry readEntry = reader.next();
long readerPos = reader.getPosition();
OptionalLong fileLength = walFileLengthProvider.getLogFileSizeIfBeingWritten(currentPath);
OptionalLong fileLength;
if (logQueue.getQueueSize(walGroupId) > 1) {
fileLength = OptionalLong.empty();
} else {
// if there is only one file in queue, check whether it is still being written to
fileLength = walFileLengthProvider.getLogFileSizeIfBeingWritten(currentPath);
}
if (fileLength.isPresent() && readerPos > fileLength.getAsLong()) {
// See HBASE-14004, for AsyncFSWAL which uses fan-out, it is possible that we read uncommitted
// data, so we need to make sure that we do not read beyond the committed file length.
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