szetszwo commented on a change in pull request #616:
URL: https://github.com/apache/ratis/pull/616#discussion_r818574232
##########
File path:
ratis-server/src/main/java/org/apache/ratis/server/raftlog/segmented/SegmentedRaftLogWorker.java
##########
@@ -144,6 +144,7 @@ synchronized void updateIndex(long i) {
private final WriteLogTasks writeTasks = new WriteLogTasks();
private volatile boolean running = true;
private final Thread workerThread;
+ private final Thread outStreamFlushThread;
Review comment:
Let's use an ExecutorService.
##########
File path:
ratis-server/src/main/java/org/apache/ratis/server/raftlog/segmented/SegmentedRaftLogWorker.java
##########
@@ -176,7 +177,7 @@ synchronized void updateIndex(long i) {
private final RaftServer.Division server;
private int flushBatchSize;
- private Timestamp lastFlush;
+ private Timestamp outStreamLastFlush;
Review comment:
State machine and out stream should either flush together or not flush
at all. We should not try to separate them. So let's don't rename this field.
##########
File path:
ratis-server/src/main/java/org/apache/ratis/server/raftlog/segmented/SegmentedRaftLogWorker.java
##########
@@ -349,13 +354,25 @@ private void run() {
}
}
+ private void checkAndFlush() {
+ while (running) {
+ try {
+ outStreamFlushIfNecessary();
+ flushIntervalMin.sleep();
+ } catch (Exception e) {
+ LOG.error("{} hit exception", Thread.currentThread().getName(), e);
+ Optional.ofNullable(server).ifPresent(RaftServer.Division::close);
+ }
+ }
+ }
+
private boolean shouldFlush() {
if (out == null) {
return false;
} else if (pendingFlushNum >= forceSyncNum) {
return true;
}
- return pendingFlushNum > 0 && queue.isEmpty() &&
lastFlush.elapsedTime().compareTo(flushIntervalMin) > 0;
+ return pendingFlushNum > 0 && queue.isEmpty();
Review comment:
Let's change flush to async but not the min time logic.
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