induce_error_index.patch

diff --git a/src/backend/access/nbtree/nbtree.c b/src/backend/access/nbtree/nbtree.c
index 4bb1629..915354b 100644
--- a/src/backend/access/nbtree/nbtree.c
+++ b/src/backend/access/nbtree/nbtree.c
@@ -20,6 +20,7 @@
 
 #include "access/nbtree.h"
 #include "access/nbtxlog.h"
+#include "access/parallel.h"
 #include "access/relscan.h"
 #include "access/xlog.h"
 #include "commands/progress.h"
@@ -1040,6 +1041,9 @@ btvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
 			if (info->report_progress)
 				pgstat_progress_update_param(PROGRESS_SCAN_BLOCKS_DONE,
 											 blkno);
+ 
+                        if (IsParallelWorker())
+                            elog(ERROR,"Error induced during index vacuum");
 		}
 	}