[Bug] failed to do checkpoint

[morningman]

Search before asking

• I had searched in the issues and found no similar issues.

Version

dev-1.0.1

What's Wrong?

Introduced from #9011

java.lang.NullPointerException: null
        at org.apache.doris.qe.VariableMgr.read(VariableMgr.java:312) ~[palo-fe.jar:0.15-SNAPSHOT]
        at org.apache.doris.catalog.Catalog.loadGlobalVariable(Catalog.java:1909) ~[palo-fe.jar:0.15-SNAPSHOT]
        at org.apache.doris.common.MetaReader.read(MetaReader.java:89) ~[palo-fe.jar:0.15-SNAPSHOT]
        at org.apache.doris.catalog.Catalog.loadImage(Catalog.java:1621) ~[palo-fe.jar:0.15-SNAPSHOT]
        at org.apache.doris.master.Checkpoint.doCheckpoint(Checkpoint.java:138) ~[palo-fe.jar:0.15-SNAPSHOT]
        at org.apache.doris.master.Checkpoint.runAfterCatalogReady(Checkpoint.java:76) ~[palo-fe.jar:0.15-SNAPSHOT]
        at org.apache.doris.common.util.MasterDaemon.runOneCycle(MasterDaemon.java:58) ~[palo-fe.jar:0.15-SNAPSHOT]
        at org.apache.doris.common.util.Daemon.run(Daemon.java:116) ~[palo-fe.jar:0.15-SNAPSHOT]

What You Expected?

works well

How to Reproduce?

No response

Anything Else?

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct