Make test more stable

dbms/tests/queries/0_stateless/01055_compact_parts_granularity.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+CURDIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+. $CURDIR/../shell_config.sh
+
+$CLICKHOUSE_CLIENT -q "DROP TABLE IF EXISTS mt_compact"
+
+# Checks that granularity correctly computed from small parts.
+
+$CLICKHOUSE_CLIENT -q "CREATE TABLE mt_compact(a Int, s String) ENGINE = MergeTree ORDER BY a
+                        SETTINGS min_rows_for_wide_part = 1000,
+                        index_granularity = 14;"
+
+$CLICKHOUSE_CLIENT -q "SYSTEM STOP MERGES mt_compact"
+
+$CLICKHOUSE_CLIENT --max_block_size=1 --min_insert_block_size_rows=1 -q \
+    "INSERT INTO mt_compact SELECT number, 'aaa' FROM numbers(100);"
+
+$CLICKHOUSE_CLIENT -q "SELECT count() FROM system.parts WHERE table = 'mt_compact' AND database = currentDatabase() AND active"
+$CLICKHOUSE_CLIENT -q "SYSTEM START MERGES mt_compact"
+
+# Retry because already started concurrent merges may interrupt optimize
+for i in {0..10}; do
+    $CLICKHOUSE_CLIENT -q "OPTIMIZE TABLE mt_compact FINAL SETTINGS optimize_throw_if_noop=1" 2>/dev/null
+    if [ $? -eq 0 ]; then
+        break
+    fi
+    sleep 0.1
+done
+
+$CLICKHOUSE_CLIENT -q "SELECT count(), sum(marks) FROM system.parts WHERE table = 'mt_compact' AND database = currentDatabase() AND active"
+$CLICKHOUSE_CLIENT -q  "DROP TABLE mt_compact"