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https://issues.apache.org/jira/browse/PHOENIX-7025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17771250#comment-17771250
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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_r1343068572
##########
phoenix-core/src/main/java/org/apache/phoenix/jdbc/PhoenixStatement.java:
##########
@@ -371,6 +482,23 @@ private PhoenixResultSet executeQuery(final
CompilableStatement stmt,
plan =
connection.getQueryServices().getOptimizer()
.optimize(PhoenixStatement.this, plan);
+ setLastQueryPlan(plan);
+
+ //verify metadata for the table/view/index in
the query plan
+ if (plan.getTableRef() != null &&
validateLastDdlTimestamp) {
+ try {
+
validateLastDDLTimestamp(plan.getTableRef(), true);
+ } catch (StaleMetadataCacheException e) {
+ String planSchemaName =
plan.getTableRef().getTable().getSchemaName().toString();
+ String planTableName =
plan.getTableRef().getTable().getTableName().toString();
+ // force update client metadata cache
+ LOGGER.debug("Force updating client
metadata cache for {}", getInfoString(getLastQueryPlan().getTableRef()));
+ new
MetaDataClient(connection).updateCache(connection.getTenantId(),
planSchemaName, planTableName, true);
+ // skip last ddl timestamp validation
in the retry
+ return executeQuery(stmt,
doRetryOnMetaNotFoundError, queryLogger, noCommit, false);
Review Comment:
@shahrs87 added a boolean flag for updating metrics in the finally block.
Setting it to false in the catch blocks.
> 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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