Extended QPT to athena-db2 (#1825)

Co-authored-by: AbdulRehman Faraj <[email protected]>
awslabs · Mar 25, 2024 · 944e3a9 · 944e3a9
1 parent 9b6ae21
commit 944e3a9
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Showing 2 changed files with 14 additions and 1 deletion.
diff --git a/athena-db2/src/main/java/com/amazonaws/athena/connectors/db2/Db2MetadataHandler.java b/athena-db2/src/main/java/com/amazonaws/athena/connectors/db2/Db2MetadataHandler.java
@@ -272,6 +272,10 @@ public void getPartitions(BlockWriter blockWriter, GetTableLayoutRequest getTabl
     public GetSplitsResponse doGetSplits(BlockAllocator blockAllocator, GetSplitsRequest getSplitsRequest)
     {
         LOGGER.info("{}: Catalog {}, table {}", getSplitsRequest.getQueryId(), getSplitsRequest.getTableName().getSchemaName(), getSplitsRequest.getTableName().getTableName());
+        if (getSplitsRequest.getConstraints().isQueryPassThrough()) {
+            LOGGER.info("QPT Split Requested");
+            return setupQueryPassthroughSplit(getSplitsRequest);
+        }
 
         int partitionContd = decodeContinuationToken(getSplitsRequest);
         Block partitions = getSplitsRequest.getPartitions();
@@ -338,6 +342,8 @@ public GetDataSourceCapabilitiesResponse doGetDataSourceCapabilities(BlockAlloca
         capabilities.put(DataSourceOptimizations.SUPPORTS_LIMIT_PUSHDOWN.withSupportedSubTypes(
                 LimitPushdownSubType.INTEGER_CONSTANT
         ));
+
+        jdbcQueryPassthrough.addQueryPassthroughCapabilityIfEnabled(capabilities, configOptions);
         return new GetDataSourceCapabilitiesResponse(request.getCatalogName(), capabilities.build());
     }
 

diff --git a/athena-db2/src/main/java/com/amazonaws/athena/connectors/db2/Db2RecordHandler.java b/athena-db2/src/main/java/com/amazonaws/athena/connectors/db2/Db2RecordHandler.java
@@ -88,7 +88,14 @@ public Db2RecordHandler(DatabaseConnectionConfig databaseConnectionConfig, java.
     @Override
     public PreparedStatement buildSplitSql(Connection jdbcConnection, String catalogName, TableName tableName, Schema schema, Constraints constraints, Split split) throws SQLException
     {
-        PreparedStatement preparedStatement = jdbcSplitQueryBuilder.buildSql(jdbcConnection, null, tableName.getSchemaName(), tableName.getTableName(), schema, constraints, split);
+        PreparedStatement preparedStatement;
+
+        if (constraints.isQueryPassThrough()) {
+            preparedStatement = buildQueryPassthroughSql(jdbcConnection, constraints);
+        }
+        else {
+            preparedStatement = jdbcSplitQueryBuilder.buildSql(jdbcConnection, null, tableName.getSchemaName(), tableName.getTableName(), schema, constraints, split);
+        }
         // Disable fetching all rows.
         preparedStatement.setFetchSize(FETCH_SIZE);
         return preparedStatement;