/**
* Modifies the per-CF dirty cursors of any commit log segments for the column family according to
* the position given. Discards any commit log segments that are no longer used.
*
* @param cfId the column family ID that was flushed
* @param context the replay position of the flush
*/
public void discardCompletedSegments(final UUID cfId, final ReplayPosition context) {
logger.trace("discard completed log segments for {}, table {}", context, cfId);
// Go thru the active segment files, which are ordered oldest to newest, marking the
// flushed CF as clean, until we reach the segment file containing the ReplayPosition passed
// in the arguments. Any segments that become unused after they are marked clean will be
// recycled or discarded.
for (Iterator<CommitLogSegment> iter = allocator.getActiveSegments().iterator();
iter.hasNext(); ) {
CommitLogSegment segment = iter.next();
segment.markClean(cfId, context);
if (segment.isUnused()) {
logger.trace("Commit log segment {} is unused", segment);
allocator.recycleSegment(segment);
} else {
logger.trace(
"Not safe to delete{} commit log segment {}; dirty is {}",
(iter.hasNext() ? "" : " active"),
segment,
segment.dirtyString());
}
// Don't mark or try to delete any newer segments once we've reached the one containing the
// position of the flush.
if (segment.contains(context)) break;
}
}
