fix(mysql): fix connectors getting stuck in "connecting" state#15909
fix(mysql): fix connectors getting stuck in "connecting" state#15909savonarola wants to merge 8 commits intoemqx:release-586from
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| end; | ||
| false -> | ||
| ?status_connecting | ||
| {error, timeout} -> |
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Currently, in EMQX, MySQL driver is configured with infinity timeout.
So, if a tcp connection breaks ungracefully, any request (including health checks) just makes workers stuck.
The subsequent healthcheck requests also fail with timeout.
So in case of healthcheck timeout we report disconnected status to trigger reconnection.
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Strange that the mysql driver does not attempt to reconnect or die if the tcp connection breaks 🤔
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Its just a guess and an attempt to fix a problem of a concrete customer.
The thing is that the connection may break without any fin/rst packets, traffic just stops to arrive. A reconnect solves the problem, but the connector stucks in connecting state till the traffic unblocks.
| {grpc, {git, "https://github.com/emqx/grpc-erl", {tag, "0.6.12"}}}, | ||
| {minirest, {git, "https://github.com/emqx/minirest", {tag, "1.4.4"}}}, | ||
| {ecpool, {git, "https://github.com/emqx/ecpool", {tag, "0.6.1"}}}, | ||
| {ecpool, {git, "https://github.com/emqx/ecpool", {tag, "0.6.1-hotfix"}}}, |
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