Pengzna commented on code in PR #14219:
URL: https://github.com/apache/iotdb/pull/14219#discussion_r1859917060
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iotdb-core/consensus/src/main/java/org/apache/iotdb/consensus/pipe/metric/PipeConsensusSyncLagManager.java:
##########
@@ -33,66 +34,50 @@
* <p>Note: every consensusGroup/dataRegion has and only has 1 instance of
this class.
*/
public class PipeConsensusSyncLagManager {
- long userWriteProgress = 0;
- long minReplicateProgress = Long.MAX_VALUE;
+ long syncLag = Long.MIN_VALUE;
+ ReentrantLock lock = new ReentrantLock();
List<ConsensusPipeConnector> consensusPipeConnectorList = new
CopyOnWriteArrayList<>();
- private void updateReplicateProgress() {
- minReplicateProgress = Long.MAX_VALUE;
- // if there isn't a consensus pipe task, replicate progress is
Long.MAX_VALUE.
- if (consensusPipeConnectorList.isEmpty()) {
- return;
- }
- // else we find the minimum progress in all consensus pipe task.
- consensusPipeConnectorList.forEach(
- consensusPipeConnector ->
- minReplicateProgress =
- Math.min(
- minReplicateProgress,
-
consensusPipeConnector.getConsensusPipeReplicateProgress()));
- }
-
- private void updateUserWriteProgress() {
- // if there isn't a consensus pipe task, user write progress is 0.
- if (consensusPipeConnectorList.isEmpty()) {
- userWriteProgress = 0;
- return;
- }
- // since the user write progress of different consensus pipes on the same
DataRegion is the
- // same, we only need to take out one Connector to calculate
- try {
- ConsensusPipeConnector connector = consensusPipeConnectorList.get(0);
- userWriteProgress = connector.getConsensusPipeCommitProgress();
- } catch (Exception e) {
- // if removing the last connector happens after empty check, we may
encounter
- // OutOfBoundsException, in this case, we set userWriteProgress to 0.
- userWriteProgress = 0;
- }
+ private long getSyncLagForSpecificConsensusPipe(ConsensusPipeConnector
consensusPipeConnector) {
+ long userWriteProgress =
consensusPipeConnector.getConsensusPipeCommitProgress();
+ long replicateProgress =
consensusPipeConnector.getConsensusPipeReplicateProgress();
+ return Math.max(userWriteProgress - replicateProgress, 0);
}
public void addConsensusPipeConnector(ConsensusPipeConnector
consensusPipeConnector) {
consensusPipeConnectorList.add(consensusPipeConnector);
Review Comment:
this method is called and is only called in a locked method. so don't need
lock here
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