Azat Khuzhin 9eeb856519 Fix INSERT into Distributed hung due to ProfileEvents ...

Right now RemoteInserter does not read ProfileEvents for INSERT, it
handles them only after sending the query or on finish.

But #37391 sends them for each INSERT block, but sometimes they can be
no ProfileEvents packet, since it sends only non-empty blocks.

And this adds too much complexity, and anyway ProfileEvents are useless
for the server, so let's send them only if the query is initial (i.e.
send by user).

Note, that it is okay to change the logic of sending ProfileEvents w/o
changing DBMS_TCP_PROTOCOL_VERSION, because there were no public
releases with the original patch included yet.

Fixes: #37391
Refs: #35075
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>

2022-06-22 15:41:15 +03:00

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