TiFlash Timeout

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This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: tiflash timeout

| username: 等一分钟

[TiDB Usage Environment] Production Environment
[TiDB Version] 6.5.1
[Reproduction Path] tiflash server timeout

| username: 等一分钟 | Original post link

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| username: 烂番薯0 | Original post link

Check if the network is connected.

| username: 等一分钟 | Original post link

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| username: 路在何chu | Original post link

Query timeout, is it because the query result is too large or the network is not good, causing an error?

| username: 等一分钟 | Original post link

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| username: 等一分钟 | Original post link

Can you see anything?

| username: 等一分钟 | Original post link

The default value of tidb_distsql_scan_concurrency is 15. You can adjust it according to your actual situation.

| username: 小龙虾爱大龙虾 | Original post link

Check if the TiFlash replicas are normal.

| username: FutureDB | Original post link

Take a look at the Grafana monitoring panels related to TiFlash.

| username: dba远航 | Original post link

How is the execution time of the SQL? If it takes too long, unexpected issues may arise.