Fix 'dispath' typo in direct dispatch code.

Corrected the misspelling of 'dispatch' (was 'dispath') in GPDB's
direct dispatch code and other places, including variable names
and comments where applicable.No functionality is affected.

Authored-by: Zhang Mingli avamingli@gmail.com

Author: avamingli

src/backend/cdb/cdbutil.c

@@ -122,7 +122,7 @@ typedef struct HostPrimaryCountEntry
  *
  * In phase 2 of 2PC, current xact has been marked to TRANS_COMMIT/ABORT,
  * COMMIT_PREPARED or ABORT_PREPARED DTM are performed, if they failed,
- * dispather disconnect and destroy all gangs and fetch the latest segment
+ * dispatcher disconnect and destroy all gangs and fetch the latest segment
  * configurations to do RETRY_COMMIT_PREPARED or RETRY_ABORT_PREPARED,
  * however, postgres disallow catalog lookups outside of xacts.
  *

src/backend/commands/cluster.c

@@ -210,7 +210,7 @@ cluster(ParseState *pstate, ClusterStmt *stmt, bool isTopLevel)
 		table_close(rel, NoLock);
 
 		/* Do the job. */
-		/* GPDB_14_MERGE_FIXME: do we need the return value of cluster_rel to dispath ? */
+		/* GPDB_14_MERGE_FIXME: do we need the return value of cluster_rel to dispatch ? */
 		cluster_rel(tableOid, indexOid, &params);
 
 		if (Gp_role == GP_ROLE_DISPATCH)

src/backend/optimizer/plan/createplan.c

@@ -2312,12 +2312,12 @@ create_projection_plan(PlannerInfo *root, ProjectionPath *best_path, int flags)
 	 * https://github.com/greenplum-db/gpdb/issues/9874 for more
 	 * detailed info.
 	 */
-	if (root->config->gp_enable_direct_dispatch && best_path->direct_dispath_contentIds)
+	if (root->config->gp_enable_direct_dispatch && best_path->direct_dispatch_contentIds)
 	{
 		DirectDispatchInfo dispatchInfo;
 
 		dispatchInfo.isDirectDispatch = true;
-		dispatchInfo.contentIds = best_path->direct_dispath_contentIds;
+		dispatchInfo.contentIds = best_path->direct_dispatch_contentIds;
 		dispatchInfo.haveProcessedAnyCalculations = true;
 
 		MergeDirectDispatchCalculationInfo(&root->curSlice->directDispatch, &dispatchInfo);

src/backend/optimizer/util/pathnode.c

@@ -2092,7 +2092,7 @@ set_append_path_locus(PlannerInfo *root, Path *pathnode, RelOptInfo *rel,
 				 * gp_execution_segment() = <segid> here, so we should update
 				 * direct dispatch info when creating plan.
 				 */
-				((ProjectionPath *) subpath)->direct_dispath_contentIds = list_make1_int(gp_session_id % numsegments);
+				((ProjectionPath *) subpath)->direct_dispatch_contentIds = list_make1_int(gp_session_id % numsegments);
 
 				CdbPathLocus_MakeStrewn(&(subpath->locus),
 				                        numsegments,

src/include/cdb/cdbtm.h

@@ -217,7 +217,7 @@ typedef struct TMGXACT
 	* When first assigning and fetching gxid, using this to keep
 	* atomic and then assign/fetch gxid with its value.
 	* Only use this on QD when necessary as QE's gxid and
-	* DistributedSnapshot is dispathed from QD.
+	* DistributedSnapshot is dispatched from QD.
 	*/
 	pg_atomic_uint64 			atomic_gxid;
 #endif

src/include/nodes/pathnodes.h

@@ -2133,7 +2133,7 @@ typedef struct ProjectionPath
 	 * CDB: projection with qual gp_execution_segment() = <segid>,
 	 * for such case we should consider update directdispatch info.
 	 */
-	List	   *direct_dispath_contentIds;
+	List	   *direct_dispatch_contentIds;
 } ProjectionPath;
 
 typedef struct RuntimeFilterPath