When a binlog message too large error occurs, tidb-server exits abnormally.

[jackysp]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

Create a very large transaction of over 2G.

2. What did you expect to see? (Required)

Execution failure.

3. What did you see instead (Required)

tidb-server exited.

[2021/09/27 17:17:44.432 +08:00] [WARN] [session.go:1533] ["run statement failed"] [conn=341] [schemaVersion=12389] [error="[global:3]critical error rpc error: code = ResourceExhausted desc = trying to send message larger than max (4097419655 vs. 2147483647)"] [session="{\n  \"currDBName\": \"polcent_db\",\n  \"id\": 341,\n  \"status\": 2,\n  \"strictMode\": true,\n  \"user\": {\n    \"Username\": \"tiuser1\",\n    \"Hostname\": \"10.79.166.195\",\n    \"CurrentUser\": false,\n    \"AuthUsername\": \"tiuser1\",\n    \"AuthHostname\": \"%\"\n  }\n}"]
[2021/09/27 17:17:44.432 +08:00] [FATAL] [conn.go:871] ["critical error, stop the server"] [conn=341] [error="[global:3]critical error rpc error: code = ResourceExhausted desc = trying to send message larger than max (4097419655 vs. 2147483647)"] [stack="github.com/pingcap/tidb/server.(*clientConn).Run\n\t/home/jenkins/agent/workspace/optimization-build-tidb-linux-amd/go/src/github.com/pingcap/tidb/server/conn.go:871\ngit.luolix.top/pingcap/tidb/server.(*Server).onConn\n\t/home/jenkins/agent/workspace/optimization-build-tidb-linux-amd/go/src/github.com/pingcap/tidb/server/server.go:485"]

4. What is your TiDB version? (Required)

c16092e

[jackysp]

In

tidb/sessionctx/binloginfo/binloginfo.go

Line 269 in 7755d25

if strings.Contains(err.Error(), "received message larger than max") {

, it tries to catch "received message larger than max", but we got "trying to send message larger than max"

PTAL @coocood

[coocood]

In

tidb/sessionctx/binloginfo/binloginfo.go

Line 269 in 7755d25

if strings.Contains(err.Error(), "received message larger than max") {

, it tries to catch "received message larger than max", but we got "trying to send message larger than max"

PTAL @coocood

So we can change it to message larger than max

[lichunzhu]

Should be fixed by pingcap/tidb-binlog#1039

[lichunzhu]

close this now because pingcap/tidb-binlog#1039 is already fixed. Feel free to reopen this if a further problem is found.

[jackysp]

The bug is still here, it happened in v6.5.3. PTAL @lichunzhu