ddlworker max entry metric

[amosbird]

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Changelog category (leave one):

• Improvement

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Export current max ddl entry executed by DDLWorker. It's useful to check if DDLWorker hangs somewhere.

Detailed description / Documentation draft:

None.

[alexey-milovidov]

There is no test, but it's not necessarily for just one metric.

[amosbird]

There is no test, but it's not necessarily for just one metric.

Tests should be added)

[amosbird]

@alesapin ... why would these simple on cluster statements time out?

[alexey-milovidov]

AFAIK Distributed DDLs only work when every server has its own hostname.

[amosbird]

AFAIK Distributed DDLs only work when every server has its own hostname.

But it works when I run fasttest docker image locally. It also works when running the test with hosted clickhouse.

[alexey-milovidov]

Anyway, you can exclude it from the fast test.

[amosbird]

Test failure seems unrelated.