CDC implementation for Citus using Logical Replication

.circleci/config.yml

@@ -455,6 +455,10 @@ jobs:
           pg_major: << parameters.pg_major >>
       - configure
       - enable_core
+      - run:
+          name: 'Install DBI.pm'
+          command: |
+            apt-get update && apt-get install libdbi-perl && apt-get install libdbd-pg-perl
       - run:
           name: 'Run Test'
           command: |
@@ -889,6 +893,10 @@ workflows:
           <<:  *tap-test-citus-15
           name: 'test-15_tap-columnar-freezing'
           suite: columnar_freezing
+      - tap-test-citus:
+          <<:  *tap-test-citus-15
+          name: 'test-15_tap-cdc'
+          suite: cdc
 
       - test-arbitrary-configs:
           name: 'test-13_check-arbitrary-configs'

src/backend/distributed/Makefile

@@ -18,7 +18,7 @@ generated_downgrade_sql_files += $(patsubst %,$(citus_abs_srcdir)/build/sql/%,$(
 DATA_built = $(generated_sql_files)
 
 # directories with source files
-SUBDIRS = . commands connection ddl deparser executor metadata operations planner progress relay safeclib shardsplit test transaction utils worker clock
+SUBDIRS = . commands cdc connection ddl deparser executor metadata operations planner progress relay safeclib shardsplit test transaction utils worker clock
 # enterprise modules
 SUBDIRS += replication