tkalkirill commented on code in PR #1506:
URL: https://github.com/apache/ignite-3/pull/1506#discussion_r1072470190
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modules/storage-page-memory/src/main/java/org/apache/ignite/internal/storage/pagememory/index/hash/PageMemoryHashIndexStorage.java:
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@@ -203,19 +187,68 @@ public void destroy() throws StorageException {
* Closes the hash index storage.
*/
public void close() {
- if (!CLOSED.compareAndSet(this, false, true)) {
+ if (!state.compareAndSet(StorageState.RUNNABLE, StorageState.CLOSED)) {
+ StorageState state = this.state.get();
+
+ assert state == StorageState.CLOSED : state;
+
return;
}
- closeBusyLock.block();
+ busyLock.block();
hashIndexTree.close();
}
/**
- * Throws an exception that the storage is already closed.
+ * Prepares storage for rebalancing.
+ *
+ * <p>Stops ongoing index operations.
+ *
+ * @throws StorageRebalanceException If there was an error when starting
the rebalance.
+ */
+ public void startRebalance() {
+ if (!state.compareAndSet(StorageState.RUNNABLE,
StorageState.REBALANCE)) {
+ throwExceptionDependingOnStorageStateOnRebalance(state.get(),
createStorageInfo());
+ }
+
+ // Stops ongoing operations on the storage.
+ busyLock.block();
+ busyLock.unblock();
+ }
+
+ /**
+ * Completes the rebalancing of the storage.
+ *
+ * @throws StorageRebalanceException If there is an error while completing
the storage rebalance.
*/
- private void throwStorageClosedException() {
- throw new StorageClosedException();
+ public void completeRebalance() {
+ if (!state.compareAndSet(StorageState.REBALANCE,
StorageState.RUNNABLE)) {
+ throwExceptionDependingOnStorageStateOnRebalance(state.get(),
createStorageInfo());
+ }
+ }
+
+ /**
+ * Updates the internal data structures of the storage on rebalance.
+ *
+ * @param freeList Free list to store index columns.
+ * @param hashIndexTree Hash index tree instance.
+ * @throws StorageRebalanceException If the storage is not in the process
of rebalancing.
+ */
+ public void updateDataStructuresOnRebalance(IndexColumnsFreeList freeList,
HashIndexTree hashIndexTree) {
+ throwExceptionIfStorageNotInProgressOfRebalance(state.get(),
this::createStorageInfo);
+
+ this.freeList = freeList;
+
+ this.hashIndexTree.close();
Review Comment:
I'll try to close them at the beginning of the rebalancing.
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