Github user arina-ielchiieva commented on a diff in the pull request:
https://github.com/apache/drill/pull/666#discussion_r95805039
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/rpc/user/UserSession.java ---
@@ -207,18 +245,85 @@ public SchemaPlus getDefaultSchema(SchemaPlus
rootSchema) {
return null;
}
- final SchemaPlus defaultSchema = SchemaUtilites.findSchema(rootSchema,
defaultSchemaPath);
+ return SchemaUtilites.findSchema(rootSchema, defaultSchemaPath);
+ }
- if (defaultSchema == null) {
- // If the current schema resolves to null, return root schema as the
current default schema.
- return defaultSchema;
+ public boolean setSessionOption(String name, String value) {
+ return true;
+ }
+
+ /**
+ * @return unique session identifier
+ */
+ public String getSessionId() { return sessionId; }
+
+ /**
+ * Creates and adds session temporary location if absent using schema
configuration.
+ * Generates temporary table name and stores it's original name as key
+ * and generated name as value in session temporary tables cache.
+ * If original table name already exists, new name is not regenerated
and is reused.
+ * This can happen if default temporary workspace was changed (file
system or location) or
+ * orphan temporary table name has remained (name was registered but
table creation did not succeed).
+ *
+ * @param schema table schema
+ * @param tableName original table name
+ * @return generated temporary table name
+ * @throws IOException if error during session temporary location
creation
+ */
+ public String registerTemporaryTable(AbstractSchema schema, String
tableName) throws IOException {
+ if (schema instanceof WorkspaceSchemaFactory.WorkspaceSchema) {
+ addTemporaryLocation((WorkspaceSchemaFactory.WorkspaceSchema)
schema);
+ String temporaryTableName = Paths.get(sessionId,
UUID.randomUUID().toString()).toString();
+ String oldTemporaryTableName =
temporaryTables.putIfAbsent(tableName, temporaryTableName);
+ return oldTemporaryTableName == null ? temporaryTableName :
oldTemporaryTableName;
+ } else {
+ throw new DrillRuntimeException("Temporary workspace must be
instance of WorkspaceSchemaFactory.WorkspaceSchema");
--- End diff --
Agree. Check will be done at drillbit start up.
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