ibessonov commented on code in PR #1011:
URL: https://github.com/apache/ignite-3/pull/1011#discussion_r946669048
##########
modules/storage-rocksdb/src/main/java/org/apache/ignite/internal/storage/rocksdb/RocksDbTableStorage.java:
##########
@@ -223,10 +232,63 @@ public void start() throws StorageException {
}
}
+ /**
+ * Returns a future to wait next flush operation from the current point in
time. Uses {@link RocksDB#getLatestSequenceNumber()} to
+ * achieve this.
+ *
+ * @param schedule {@code true} if {@link RocksDB#flush(FlushOptions)}
should be explicitly triggerred in the near future.
+ *
+ * @see #scheduleFlush()
+ */
+ public CompletableFuture<Void> awaitFlush(boolean schedule) {
+ CompletableFuture<Void> future;
+
+ long dbSequenceNumber = db.getLatestSequenceNumber();
+
+ synchronized (this) {
Review Comment:
Laziness
##########
modules/storage-rocksdb/src/main/java/org/apache/ignite/internal/storage/rocksdb/RocksDbTableStorage.java:
##########
@@ -223,10 +232,63 @@ public void start() throws StorageException {
}
}
+ /**
+ * Returns a future to wait next flush operation from the current point in
time. Uses {@link RocksDB#getLatestSequenceNumber()} to
+ * achieve this.
+ *
+ * @param schedule {@code true} if {@link RocksDB#flush(FlushOptions)}
should be explicitly triggerred in the near future.
+ *
+ * @see #scheduleFlush()
+ */
+ public CompletableFuture<Void> awaitFlush(boolean schedule) {
+ CompletableFuture<Void> future;
+
+ long dbSequenceNumber = db.getLatestSequenceNumber();
+
+ synchronized (this) {
+ if (dbSequenceNumber <= latestPersistedSequenceNumber) {
+ return CompletableFuture.completedFuture(null);
+ }
+
+ future =
flushFuturesBySequenceNumber.computeIfAbsent(dbSequenceNumber, l -> new
CompletableFuture<>());
+ }
+
+ if (schedule) {
+ scheduleFlush();
+ }
+
+ return future;
+ }
+
+ /**
+ * Completes all futures in {@link #flushFuturesBySequenceNumber} up to a
given sequence number.
+ */
+ void completeFutures(long sequenceNumber) {
+ synchronized (this) {
Review Comment:
Same reason
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