CI reports [1]:
2023.03.14 00:29:07.031349 [ 166170 ] {110f8654-7d7d-4b47-b6b0-3ce83414a80f} <Error> ReadWriteBufferFromHTTP: HTTP request to `http://127.0.0.1:9018/columns_info?use_connection_pooling=1&version=1&connection_string=DSN%3D%7BClickHouse%20DSN%20%28ANSI%29%7D&schema=test_15&table=t&external_table_functions_use_nulls=1` failed at try 1/1 with bytes read: 0/unknown. Error: DB::HTTPException: Received error from remote server /columns_info?use_connection_pooling=1&version=1&connection_string=DSN%3D%7BClickHouse%20DSN%20%28ANSI%29%7D&schema=test_15&table=t&external_table_functions_use_nulls=1. HTTP status code: 500 Internal Server Error, body: Error getting columns from ODBC 'Code: 49. DB::Exception: Columns definition was not returned. (LOGICAL_ERROR) (version 23.2.4.12 (official build))'
[1]: https://s3.amazonaws.com/clickhouse-test-reports/47541/3d247b8635da44bccfdeb5fcd53be7130b8d0a32/upgrade_check__msan_.html
Here the problem is that system.columns has cached value for number of
total table to iterate, and so it can skip something.
But anyway, this should be LOGICAL_ERROR, since ODBC bridge does two
queries:
- to system.tables and
- to system.columns
And if between this two queries the table will be removed, them there
will be no columns
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
* save format string for NetException
* format exceptions
* format exceptions 2
* format exceptions 3
* format exceptions 4
* format exceptions 5
* format exceptions 6
* fix
* format exceptions 7
* format exceptions 8
* Update MergeTreeIndexGin.cpp
* Update AggregateFunctionMap.cpp
* Update AggregateFunctionMap.cpp
* fix
- lots of static_cast
- add safe_cast
- types adjustments
- config
- IStorage::read/watch
- ...
- some TODO's (to convert types in future)
P.S. That was quite a journey...
v2: fixes after rebase
v3: fix conflicts after #42308 merged
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
This makes the target location consistent with other auto-generated
files like config_formats.h, config_core.h, and config_functions.h and
simplifies the build of clickhouse_common.
- In general, it is expected that clickhouse-*-bridges and
clickhouse-server were build from the same source version (e.g. are
upgraded "atomically"). If that is not the case, we should at least
be able to detect the mismatch and abort.
- This commit adds a URL parameter "version", defined in a header shared
by the server and bridges. The bridge returns an error in case of
mismatch.
- The version is *not* send and checked for "ping" requests (used for
handshake), only for regular requests send after handshake. This is
because the internally thrown server-side exception due to HTTP
failure does not propagate the exact HTTP error (it only stores the
error as text), and as a result, the server-side handshake code
simply retries in case of error with exponential backoff and finally
fails with a "timeout error". This is reasonable as pings typically
fail due to time out. However, without a rework of HTTP exceptions,
version mismatch during ping would also appear as "timeout" which is
too misleading. The behavior may be changed later if needed.
- Note that introducing a version parameter does not represent a
protocol upgrade itself. Bridges older than the server will simply
ignore the field. Only servers older than the bridges receive an error
but such a situation should never occur in practice.
