Merge branch 'master' into better-rethrow

docs/en/operations/system-tables/crash-log.md

@@ -0,0 +1,48 @@
+# system.crash_log {#system-tables_crash_log}
+
+Contains information about stack traces for fatal errors. The table does not exist in the database by default, it is created only when fatal errors occur.
+
+Columns:
+
+-   `event_date` ([Datetime](../../sql-reference/data-types/datetime.md)) — Date of the event.
+-   `event_time` ([Datetime](../../sql-reference/data-types/datetime.md)) — Time of the event.
+-   `timestamp_ns` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Timestamp of the event with nanoseconds.
+-   `signal` ([Int32](../../sql-reference/data-types/int-uint.md)) — Signal number.
+-   `thread_id` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Thread ID.
+-   `query_id` ([String](../../sql-reference/data-types/string.md)) — Query ID.
+-   `trace` ([Array](../../sql-reference/data-types/array.md)([UInt64](../../sql-reference/data-types/int-uint.md))) — Stack trace at the moment of crash. Each element is a virtual memory address inside ClickHouse server process.
+-   `trace_full` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — Stack trace at the moment of crash. Each element contains a called method inside ClickHouse server process.
+-   `version` ([String](../../sql-reference/data-types/string.md)) — ClickHouse server version.
+-   `revision` ([UInt32](../../sql-reference/data-types/int-uint.md)) — ClickHouse server revision.
+-   `build_id` ([String](../../sql-reference/data-types/string.md)) — BuildID that is generated by compiler.
+
+**Example**
+
+Query:
+
+``` sql
+SELECT * FROM system.crash_log ORDER BY event_time DESC LIMIT 1;
+```
+
+Result (not full):
+
+``` text
+Row 1:
+──────
+event_date:   2020-10-14
+event_time:   2020-10-14 15:47:40
+timestamp_ns: 1602679660271312710
+signal:       11
+thread_id:    23624
+query_id:     428aab7c-8f5c-44e9-9607-d16b44467e69
+trace:        [188531193,...]
+trace_full:   ['3. DB::(anonymous namespace)::FunctionFormatReadableTimeDelta::executeImpl(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> >&, std::__1::vector<unsigned long, std::__1::allocator<unsigned long> > const&, unsigned long, unsigned long) const @ 0xb3cc1f9 in /home/username/work/ClickHouse/build/programs/clickhouse',...]
+version:      ClickHouse 20.11.1.1
+revision:     54442
+build_id:
+```
+
+**See also**
+-   [trace_log](../../operations/system-tables/trace_log.md) system table
+
+[Original article](https://clickhouse.tech/docs/en/operations/system-tables/crash-log)

docs/ru/operations/system-tables/crash-log.md

@@ -0,0 +1,48 @@
+# system.crash_log {#system-tables_crash_log}
+
+Содержит информацию о трассировках стека для фатальных ошибок. Таблица не содержится в базе данных по умолчанию, а создается только при возникновении фатальных ошибок.
+
+Колонки:
+
+-   `event_date` ([Datetime](../../sql-reference/data-types/datetime.md)) — Дата события.
+-   `event_time` ([Datetime](../../sql-reference/data-types/datetime.md)) — Время события.
+-   `timestamp_ns` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Время события с наносекундами.
+-   `signal` ([Int32](../../sql-reference/data-types/int-uint.md)) — Номер сигнала, пришедшего в поток.
+-   `thread_id` ([UInt64](../../sql-reference/data-types/int-uint.md)) — Идентификатор треда.
+-   `query_id` ([String](../../sql-reference/data-types/string.md)) — Идентификатор запроса.
+-   `trace` ([Array](../../sql-reference/data-types/array.md)([UInt64](../../sql-reference/data-types/int-uint.md))) — Трассировка стека в момент ошибки. Представляет собой список физических адресов, по которым расположены вызываемые методы.
+-   `trace_full` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — Трассировка стека в момент ошибки. Содержит вызываемые методы.
+-   `version` ([String](../../sql-reference/data-types/string.md)) — Версия сервера ClickHouse.
+-   `revision` ([UInt32](../../sql-reference/data-types/int-uint.md)) — Ревизия сборки сервера ClickHouse.
+-   `build_id` ([String](../../sql-reference/data-types/string.md)) — BuildID, сгенерированный компилятором.
+
+**Пример**
+
+Запрос:
+
+``` sql
+SELECT * FROM system.crash_log ORDER BY event_time DESC LIMIT 1;
+```
+
+Результат (приведён не полностью):
+
+``` text
+Row 1:
+──────
+event_date:   2020-10-14
+event_time:   2020-10-14 15:47:40
+timestamp_ns: 1602679660271312710
+signal:       11
+thread_id:    23624
+query_id:     428aab7c-8f5c-44e9-9607-d16b44467e69
+trace:        [188531193,...]
+trace_full:   ['3. DB::(anonymous namespace)::FunctionFormatReadableTimeDelta::executeImpl(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> >&, std::__1::vector<unsigned long, std::__1::allocator<unsigned long> > const&, unsigned long, unsigned long) const @ 0xb3cc1f9 in /home/username/work/ClickHouse/build/programs/clickhouse',...]
+version:      ClickHouse 20.11.1.1
+revision:     54442
+build_id:
+```
+
+**См. также**
+-   Системная таблица [trace_log](../../operations/system-tables/trace_log.md)
+
+[Original article](https://clickhouse.tech/docs/en/operations/system-tables/crash-log)

tests/testflows/ldap/authentication/tests/common.py

@@ -85,19 +85,29 @@ def add_config(config, timeout=60, restart=False):
     :param config: configuration file description
     :param timeout: timeout, default: 20 sec
     """
-    def check_preprocessed_config_is_updated():
+    def check_preprocessed_config_is_updated(after_removal=False):
         """Check that preprocessed config is updated.
         """
         started = time.time()
         command = f"cat /var/lib/clickhouse/preprocessed_configs/{config.preprocessed_name} | grep {config.uid}{' > /dev/null' if not settings.debug else ''}"
+
         while time.time() - started < timeout:
             exitcode = node.command(command, steps=False).exitcode
-            if exitcode == 0:
-                break
+            if after_removal:
+                if exitcode == 1:
+                    break
+            else:
+                if exitcode == 0:
+                    break
             time.sleep(1)
+
         if settings.debug:
             node.command(f"cat /var/lib/clickhouse/preprocessed_configs/{config.preprocessed_name}")
-        assert exitcode == 0, error()
+
+        if after_removal:
+            assert exitcode == 1, error()
+        else:
+            assert exitcode == 0, error()
 
     def wait_for_config_to_be_loaded():
         """Wait for config to be loaded.
@@ -160,7 +170,7 @@ def add_config(config, timeout=60, restart=False):
                     node.command(f"rm -rf {config.path}", exitcode=0)
 
                 with Then(f"{config.preprocessed_name} should be updated", description=f"timeout {timeout}"):
-                    check_preprocessed_config_is_updated()
+                    check_preprocessed_config_is_updated(after_removal=True)
 
                 with And("I wait for config to be reloaded"):
                     wait_for_config_to_be_loaded()