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https://issues.apache.org/jira/browse/PHOENIX-7025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17764913#comment-17764913
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ASF GitHub Bot commented on PHOENIX-7025:
-----------------------------------------
shahrs87 commented on code in PR #1666:
URL: https://github.com/apache/phoenix/pull/1666#discussion_r1325160495
##########
phoenix-core/src/it/java/org/apache/phoenix/end2end/ServerMetadataCachingIT.java:
##########
@@ -0,0 +1,264 @@
+package org.apache.phoenix.end2end;
+
+
+import org.apache.hadoop.hbase.client.Admin;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.phoenix.cache.ServerMetadataCache;
+import org.apache.phoenix.coprocessor.PhoenixRegionServerEndpoint;
+import org.apache.phoenix.query.BaseTest;
+import org.apache.phoenix.query.ConnectionQueryServices;
+import org.apache.phoenix.query.QueryServices;
+import org.apache.phoenix.schema.PName;
+import org.apache.phoenix.schema.types.PVarchar;
+import org.apache.phoenix.thirdparty.com.google.common.collect.Maps;
+import org.apache.phoenix.util.PropertiesUtil;
+import org.apache.phoenix.util.QueryUtil;
+import org.apache.phoenix.util.ReadOnlyProps;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+import org.mockito.Mockito;
+
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.Map;
+import java.util.Properties;
+import java.util.Random;
+
+import static
org.apache.hadoop.hbase.coprocessor.CoprocessorHost.REGIONSERVER_COPROCESSOR_CONF_KEY;
+import static org.apache.phoenix.util.TestUtil.TEST_PROPERTIES;
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyLong;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Matchers.isNull;
+
+@Category({NeedsOwnMiniClusterTest.class })
+public class ServerMetadataCachingIT extends BaseTest {
Review Comment:
Do you want to add all the tests in ServerMetadataCacheTest?
> 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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