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Better handling for connection errors in the std interface #879

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merged 1 commit into from
Jan 27, 2023

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@n-oden n-oden commented Jan 25, 2023

  • check for EOF/EPIPE errors in the major functions of clickhouse_std.go and explicitly return driver.ErrBadConn when we catch them

  • add debug logging of most error conditions to the std interface, following the existing pattern for error handling

Signed-off-by: Nathan J. Mehl n@oden.io

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n-oden commented Jan 25, 2023

@jkaflik I think this is the other piece of the puzzle, at least for the std interface: with this patch in place on our side and debugging enabled, resetting a server node results in one EOF error logged per active connection, no "context cancelled" errors, and an immediate recovery.

@n-oden n-oden force-pushed the add-more-logging-std branch from 1ede73c to edbf10e Compare January 25, 2023 20:09
clickhouse_std.go Outdated Show resolved Hide resolved
@n-oden n-oden force-pushed the add-more-logging-std branch 2 times, most recently from 3a1df47 to e7a9e51 Compare January 27, 2023 15:37
- check for EOF/EPIPE errors in the major functions of
  clickhouse_std.go and explicitly return driver.ErrBadConn
  when we catch them

- add debug logging of most error conditions to the std interface,
  following the existing pattern for error handling

Signed-off-by: Nathan J. Mehl <n@oden.io>
@n-oden n-oden force-pushed the add-more-logging-std branch from e7a9e51 to 5828ef5 Compare January 27, 2023 15:51
@jkaflik jkaflik merged commit 1be6c11 into ClickHouse:main Jan 27, 2023
@n-oden n-oden deleted the add-more-logging-std branch January 28, 2023 18:44
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2 participants