Cover re-parsing of metadata from zookeeper

tests/integration/test_replicated_parse_zk_metadata/test.py

@@ -0,0 +1,48 @@
+import pytest
+
+from helpers.cluster import ClickHouseCluster
+
+cluster = ClickHouseCluster(__file__)
+node = cluster.add_instance('node', with_zookeeper=True)
+
+@pytest.fixture(scope='module', autouse=True)
+def started_cluster():
+    try:
+        cluster.start()
+        yield cluster
+    finally:
+        cluster.shutdown()
+
+def test_replicated_engine_parse_metadata_on_attach():
+    node.query(
+    '''
+    CREATE TABLE data (
+        key Int,
+        INDEX key_idx0 key+0 TYPE minmax GRANULARITY 1,
+        INDEX key_idx1 key+1 TYPE minmax GRANULARITY 1
+    )
+    ENGINE = ReplicatedMergeTree('/ch/tables/default/data', 'node')
+    ORDER BY key;
+    ''')
+    node.query('DETACH TABLE data')
+
+    zk = cluster.get_kazoo_client('zoo1')
+    # Add **extra space between indices**, to check that it will be re-parsed
+    # and successfully accepted by the server.
+    #
+    # This metadata was obtain from the server without #11325
+    zk.set('/ch/tables/default/data/replicas/node/metadata', """
+metadata format version: 1
+date column: 
+sampling expression: 
+index granularity: 8192
+mode: 0
+sign column: 
+primary key: key
+data format version: 1
+partition key: 
+indices:  key_idx0 key + 0 TYPE minmax GRANULARITY 1,  key_idx1 key + 1 TYPE minmax GRANULARITY 1
+granularity bytes: 10485760
+
+""".lstrip())
+    node.query('ATTACH TABLE data')