[refactor](catalog) set "use_meta_cache" default to true (#38244)(#38352)(#38619)#38355
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morningman merged 3 commits intoapache:branch-2.1from Aug 2, 2024
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[refactor](catalog) set "use_meta_cache" default to true (#38244)(#38352)(#38619)#38355morningman merged 3 commits intoapache:branch-2.1from
morningman merged 3 commits intoapache:branch-2.1from
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morningman
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This is PR apache#33610 introduce a new feature of `use_meta_cache=true`. Now I will set this property default to true. For all newly created catalog, is this property is not specified, it will be true. For all previously created catalog, this property is still false.
…#38619) Brought by: apache#38244 how to reproduce: create a hms catalog named hive with property use_meta_cache = false, after that restart fe, and run sql `switch hive; show databases;`, will get error： ```sql ERROR 1105 (HY000): NullPointerException, msg: java.lang.NullPointerException: Cannot invoke "org.apache.doris.datasource.metacache.MetaCache.listNames()" because "this.metaCache" is null ``` reason, property use_meta_cache of newly created hms catalog after pr apache#38244 was force convert to true, but field `useMetaCache` of class ExternalCatalog is not converted at the same time.
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bp #38244 #38352 #38619