config: max-memory has been deleted from 5.0.0, should not displayed in config list of tidb log

[seiya-annie]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

1. install v4.0.11 with max-memory = 0
2. upgrade to v5.0.0
3. check config value in tidb log

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

max-memory can't find in config list

3. What did you see instead (Required)

["loaded config"] [config="{"host":"0.0.0.0","advertise-address":"172.16.5.101","port":4000,"cors":"","store":"tikv","path":"172.16.5.101:2379","socket":"","lease":"45s","run-ddl":true,"split-table":true,"token-limit":1000,"oom-use-tmp-storage":true,"tmp-storage-path":"/tmp/1003_tidb/MC4wLjAuMDo0MDAwLzAuMC4wLjA6MTAwODA=/tmp-storage","oom-action":"log","mem-quota-query":1073741824,"tmp-storage-quota":-1,"enable-streaming":false,"enable-batch-dml":false,"lower-case-table-names":2,"server-version":"","log":{"level":"info","format":"text","disable-timestamp":null,"enable-timestamp":null,"disable-error-stack":null,"enable-error-stack":null,"file":{"filename":"/home/tidb/deploy/tidb-4000/log/tidb.log","max-size":300,"max-days":0,"max-backups":0},"enable-slow-log":true,"slow-query-file":"log/tidb_slow_query.log","slow-threshold":300,"expensive-threshold":10000,"query-log-max-len":4096,"record-plan-in-slow-log":1},"security":{"skip-grant-table":false,"ssl-ca":"","ssl-cert":"","ssl-key":"","require-secure-transport":false,"cluster-ssl-ca":"","cluster-ssl-cert":"","cluster-ssl-key":"","cluster-verify-cn":null,"spilled-file-encryption-method":"plaintext"},"status":{"status-host":"0.0.0.0","metrics-addr":"","status-port":10080,"metrics-interval":15,"report-status":true,"record-db-qps":false},"performance":{"max-procs":0,"max-memory":0,

4. What is your TiDB version? (Required)

v5.0.0-pre

[seiya-annie]

/info

[ti-srebot]

Please edit this comment or add a new comment to complete the following information

Not a bug

1. Remove the 'type/bug' label
2. Add notes to indicate why it is not a bug

Duplicate bug

1. Add the 'type/duplicate' label
2. Add the link to the original bug

Bug

Note: Make Sure that 'component', and 'severity' labels are added
Example for how to fill out the template: #20100

1. Root Cause Analysis (RCA) (optional)

2. Symptom (optional)

3. All Trigger Conditions (optional)

4. Workaround (optional)

5. Affected versions

master, v5.0.0-pre

6. Fixed versions

master

[ti-srebot]

( component or sig(label) ) fields are empty.