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https://issues.apache.org/jira/browse/PHOENIX-7025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17774667#comment-17774667
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ASF GitHub Bot commented on PHOENIX-7025:
-----------------------------------------
palashc commented on code in PR #1666:
URL: https://github.com/apache/phoenix/pull/1666#discussion_r1357284425
##########
phoenix-core/src/test/java/org/apache/phoenix/cache/ServerMetadataCacheTest.java:
##########
@@ -678,6 +677,139 @@ public void testSelectQueryOnSystemTables() throws
Exception {
}
}
+ /**
+ * Test query on index with stale last ddl timestamp.
+ * Client-1 creates a table and an index on it. Client-2 queries table
(with index hint) to populate its cache.
+ * Client-1 alters a property on the index. Client-2 queries the table
again.
+ * Verify that the second query works and the index metadata was updated
in the client cache.
+ */
+ @Test
+ public void testSelectQueryAfterAlterIndex() throws Exception {
+ Properties props = PropertiesUtil.deepCopy(TEST_PROPERTIES);
+ String url1 = QueryUtil.getConnectionUrl(props, config, "client1");
+ String url2 = QueryUtil.getConnectionUrl(props, config, "client2");
+ String tableName = generateUniqueName();
+ String indexName = generateUniqueName();
+ ConnectionQueryServices spyCqs1 =
Mockito.spy(driver.getConnectionQueryServices(url1, props));
+ ConnectionQueryServices spyCqs2 =
Mockito.spy(driver.getConnectionQueryServices(url2, props));
+
+ try (Connection conn1 = spyCqs1.connect(url1, props);
+ Connection conn2 = spyCqs2.connect(url2, props)) {
+
+ //client-1 creates a table and an index on it
+ createTable(conn1, tableName, NEVER);
+ createIndex(conn1, tableName, indexName, "v1");
+ TestUtil.waitForIndexState(conn1, indexName, PIndexState.ACTIVE);
+
+ //client-2 populates its cache, 1 getTable&addTable call for the
table
+ //no getTable calls for Index since we add all indexes in the
cache from a table's PTable object
+ queryWithNoIndexHint(conn2, tableName);
Review Comment:
The goal was to populate the client cache with both the table and index. If
the query is on the index table, I think the data table will not be populated
in the client cache.
> Create a new RPC to validate last ddl timestamp for read requests.
> ------------------------------------------------------------------
>
> Key: PHOENIX-7025
> URL: https://issues.apache.org/jira/browse/PHOENIX-7025
> Project: Phoenix
> Issue Type: Sub-task
> Reporter: Rushabh Shah
> Assignee: Palash Chauhan
> Priority: Major
>
> Introduce a new RPC request from phoenix client to any region server via
> PhoenixRegionServerEndpoint#validateLastDDLTimestamp. Since the last ddl
> timestamp cache is maintained by all the regionservers, you can choose any
> regionserver randomly. In future, we can make this rpc more resilient by
> sending this rpc to multiple regionservers simultaneously.
> If phoenix client throws StaleMetadataCacheException then invalidate the
> cache on the client side and retry executeQuery method while fetching the
> updated metadata from SYSCAT regionserver.
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