saintstack commented on a change in pull request #667: HBASE-23055 Alter
hbase:meta
URL: https://github.com/apache/hbase/pull/667#discussion_r330134366
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File path:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.java
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@@ -666,42 +669,25 @@ public void run(PRESP resp) {
@Override
public CompletableFuture<Boolean> isTableEnabled(TableName tableName) {
- if (TableName.isMetaTableName(tableName)) {
- return CompletableFuture.completedFuture(true);
- }
- CompletableFuture<Boolean> future = new CompletableFuture<>();
- addListener(AsyncMetaTableAccessor.getTableState(metaTable, tableName),
(state, error) -> {
- if (error != null) {
- future.completeExceptionally(error);
- return;
- }
- if (state.isPresent()) {
- future.complete(state.get().inStates(TableState.State.ENABLED));
- } else {
- future.completeExceptionally(new TableNotFoundException(tableName));
- }
- });
- return future;
+ return isTableState(tableName, TableState.State.ENABLED);
}
@Override
public CompletableFuture<Boolean> isTableDisabled(TableName tableName) {
- if (TableName.isMetaTableName(tableName)) {
- return CompletableFuture.completedFuture(false);
- }
- CompletableFuture<Boolean> future = new CompletableFuture<>();
- addListener(AsyncMetaTableAccessor.getTableState(metaTable, tableName),
(state, error) -> {
- if (error != null) {
- future.completeExceptionally(error);
- return;
- }
- if (state.isPresent()) {
- future.complete(state.get().inStates(TableState.State.DISABLED));
- } else {
- future.completeExceptionally(new TableNotFoundException(tableName));
- }
- });
- return future;
+ return isTableState(tableName, TableState.State.DISABLED);
+ }
+
+ /**
+ * @return Future that calls Master getTableState and compares to
<code>state</code>
+ */
+ private CompletableFuture<Boolean> isTableState(TableName tableName,
TableState.State state) {
+ return this.<Boolean> newMasterCaller().
Review comment:
Let me file subtask to look at the incidence of state lookups.
I was thinking admin enable/disable are infrequent and ok if they fail
because master is offline. Let me look at how often inline read/write does
table state. Thanks.
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