update perf tests

update changelog

Initialize MaxDDLEntryID upon restarting

DOCSUP-5931: Documented the byteSize function

Function reinterpretAs updated to support big integers

UNBOUNDED FOLLOWING frame end

Update entrypoint.sh

Fixed port clash from test_storage_kerberized_hdfs test.

Docs - https interserver replication

Fix some of the issues found by Coverity

Improve performance of aggregate functions

Fix flaky integration tests

Fix for #20002

In [1]:

    start_cluster = <helpers.cluster.ClickHouseCluster object at 0x7f2d46895dd8>

        def test_different_versions(start_cluster):
            with pytest.raises(QueryTimeoutExceedException):
                node.query("SELECT sleep(3)", timeout=1)
            with pytest.raises(QueryRuntimeException):
    >           node.query("SELECT 1", settings={'max_concurrent_queries_for_user': 1})
    E           Failed: DID NOT RAISE <class 'helpers.client.QueryRuntimeException'>

  [1]: https://clickhouse-test-reports.s3.yandex.net/19451/b68508002d134ead05bf2ca0e22a13a34a5c55c6/integration_tests_(thread).html#fail1

Here is an example:

    2021.01.31 14:04:43.615618 [ 54 ] {} <Debug> executeQuery: (internal) /*Materialize MySQL step 1: execute dump data*/ INSERT INTO t(a, b, _sign, _version) VALUES
    2021.01.31 14:04:43.616453 [ 54 ] {} <Trace> db.t (fc55a47e-1cae-4f41-9a13-91ccde5a73bb): Renaming temporary part tmp_insert_0_1_1_0 to 0_1_1_0.
    ...
    2021.01.31 14:04:43.786823 [ 12 ] {4a0d1f80-4a96-4809-a84e-d55d7cd25cdd} <Debug> executeQuery: (from 172.18.0.1:45162, using production parser) SELECT count(_version) FROM db.t FORMAT TSV
    ...
    2021.01.31 14:04:44.566037 [ 54 ] {} <Debug> executeQuery: (internal) /*Materialize MySQL step 1: execute dump data*/ INSERT INTO t(a, b, _sign, _version) VALUES
    2021.01.31 14:04:44.566943 [ 54 ] {} <Trace> db.t (fc55a47e-1cae-4f41-9a13-91ccde5a73bb): Renaming temporary part tmp_insert_0_2_2_0 to 0_2_2_0.
    ...
    2021.01.31 14:04:52.343911 [ 54 ] {} <Error> MaterializeMySQLSyncThread: Code: 1002, e.displayText() = DB::Exception: Master maybe lost, Stack trace (when copying this message, always include the lines below):

  [1]: https://clickhouse-test-reports.s3.yandex.net/19584/978f23e3437d0d0eb64727e87ffe1b80289c9fc2/integration_tests_(release).html#fail1

Since ExternalLoader::PeriodicUpdater::check_period_sec = 5, and so if
it will be scheduled too early the reload will be skipped, and indeed
this is what you can see in logs [1], the reload is done each 10
seconds, not 5:

    2021.01.31 14:20:22.590999 [ 48 ] {} <Trace> ExternalDictionariesLoader: Supposed update time for 'dep_x' is 2021-01-31 14:20:27 (loaded, lifetime [5, 5], no errors)
    2021.01.31 14:20:22.591016 [ 48 ] {} <Trace> ExternalDictionariesLoader: Next update time for 'dep_x' was set to 2021-01-31 14:20:27
    ...
    2021.01.31 14:20:32.164882 [ 50 ] {} <Trace> ExternalDictionariesLoader: Start loading object 'dep_x'

  [1]: https://clickhouse-test-reports.s3.yandex.net/19584/37797fdf5b30dc97147e73b3ac8ca9025b80aaed/integration_tests_(release).html#fail1