tkalkirill commented on code in PR #1673:
URL: https://github.com/apache/ignite-3/pull/1673#discussion_r1109610687
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modules/storage-page-memory/src/main/java/org/apache/ignite/internal/storage/pagememory/mv/AbstractPageMemoryMvPartitionStorage.java:
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@@ -922,4 +960,58 @@ protected <T> T inUpdateVersionChainLock(RowId rowId,
Supplier<T> supplier) {
});
}
}
+
+ @Override
+ public @Nullable BinaryRowAndRowId pollForVacuum(HybridTimestamp
lowWatermark) {
+ return busy(() -> {
+ throwExceptionIfStorageNotInRunnableState();
+
+ GarbageCollectionRowVersion first = gcQueue.findFirstFromGc();
+
+ // Garbage collection queue is empty.
+ if (first == null) {
+ return null;
+ }
+
+ HybridTimestamp rowTimestamp = first.getTimestamp();
+
+ // There are no versions in the garbage collection queue before
watermark.
+ if (rowTimestamp.compareTo(lowWatermark) > 0) {
+ return null;
+ }
+
+ RowId rowId = first.getRowId();
+
+ return inUpdateVersionChainLock(rowId, () -> {
+ // Someone processed the element in parallel.
+ if (!gcQueue.removeFromGc(rowId, rowTimestamp)) {
+ return null;
+ }
+
+ RowVersion removedRowVersion = removeWriteOnGc(rowId,
rowTimestamp);
+
+ return new
BinaryRowAndRowId(rowVersionToBinaryRow(removedRowVersion), rowId);
+ });
+ });
+ }
+
+ private RowVersion removeWriteOnGc(RowId rowId, HybridTimestamp
rowTimestamp) {
+ RemoveWriteOnGcInvokeClosure removeWriteOnGc = new
RemoveWriteOnGcInvokeClosure(rowId, rowTimestamp, this);
Review Comment:
You're right, I'll fix it.
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