wenzhenghu commented on code in PR #65126:
URL: https://github.com/apache/doris/pull/65126#discussion_r3637515305
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fe/fe-core/src/main/java/org/apache/doris/datasource/ExternalDatabase.java:
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@@ -442,27 +471,17 @@ public DatabaseProperty getDbProperties() {
@Override
public boolean isTableExist(String tableName) {
SessionContext sessionContext = SessionContext.current();
+ if (extCatalog.shouldBypassTableNameCache(sessionContext)) {
Review Comment:
Fixed in 48291325300.
The delegated-session bypass now enumerates remote names only when
local-to-remote resolution is required (`lower_case_table_names` mode 1/2,
`lower_case_meta_names`, or `meta_names_mapping`). Plain mode 0 calls
`tableExist()` directly with the requested name, restoring the point-lookup
path without populating shared caches.
I also separated list and existence-call tracing in
`ExternalDatabaseSessionContextTest`. The tests now verify that mode 0 performs
no table enumeration, while mode 1 mixed-case and mode 2 lookups still resolve
the remote name without shared-cache use. `ExternalDatabaseSessionContextTest`
(8 tests) and `ExternalDatabaseTest` (22 tests) pass, and FE checkstyle reports
0 violations.
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