copr: fix copr cache panic when tidb_enable_collect_execution_info
is off (#48340)
#48476
+30
−1
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This is an automated cherry-pick of #48340
What problem does this PR solve?
Issue Number: close #48212
Problem Summary:
Goroutine panic because of nil pointer dereference.
What is changed and how it works?
When coprocessor cache is hit, check the details before set execution info.
Because some internal tasks may lead to cache hit when
tidb_enable_collect_execution_info
is turned off, so this need to be checked.Check List
Tests
It may panic like the log in #48212
No panic
Side effects
Documentation
Release note
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