dosubot[bot] commented on issue #3095: URL: https://github.com/apache/hugegraph/issues/3095#issuecomment-4977378618
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Here's why this could cause the cross-GraphSpace data leakage you're observing: - HStore isolates graphs using a composite `database/store` identifier [registered with PDClient](https://github.com/apache/hugegraph/blob/9126c80e414c073b60fc074361b211cfb409e0eb/hugegraph-server/hugegraph-hstore/src/main/java/org/apache/hugegraph/backend/store/hstore/HstoreSessionsImpl.java#L84-L92) for partition allocation. Each graph gets its own `HstoreSession` opened against that graph name [[2]](https://github.com/apache/hugegraph/blob/9126c80e414c073b60fc074361b211cfb409e0eb/hugegraph-server/hugegraph-hstore/src/main/java/org/apache/hugegraph/backend/store/hstore/HstoreSessionsImpl.java#L415-L425). - During [graph initialization](https://github.com/apache/hugegraph/blob/9126c80e414c073b60fc074361b211cfb409e0eb/hugegraph-server/hugegraph-hstore/src/main/java/org/apache/hugegraph/backend/store/hstore/HstoreSessionsImpl.java#L125-L142), the system checks a JVM-wide static `infoInitializedGraph` set to decide whether to register the graph with PDClient via `setGraph()`. If a graph name is already in that set (from a previous creation), the registration step is skipped — potentially reusing stale partition mappings [[3]](https://github.com/apache/hugegraph/blob/9126c80e414c073b60fc074361b211cfb409e0eb/hugegraph-server/hugegraph-hstore/src/main/java/org/apache/hugegraph/backend/store/hstore/HstoreSessionsImpl.java#L72-L73). - Additionally, issue #3090 confirms that **schema cleanup uses asynchronous deletion with only a 100ms wait**, allowing schema tasks and cache-clear events to cross graph boundaries [[1]](https://github.com/apache/hugegraph/issues/3090). The fact that your second test run returned vertices from the first run — even with completely different GraphSpace, graph, store, and schema names — strongly suggests the underlying storage partitions are being reused rather than freshly allocated. This aligns with the `infoInitializedGraph` lifecycle bug: once a graph partition exists, new graphs may inadvertently share it. Issue #3090's acceptance criteria explicitly require **"Multi-graph schema isolation passes"** and **"Repeated clear and recreate tests pass for at least 50 iterations without cross-test tasks or stale initialization state"** [[1]](https://github.com/apache/hugegraph/issues/3090), which directly addresses the class of problem you've reported. You may want to track #3090 for progress on the fix. Your report adds valuable evidence that this isolation failure affects not just tests but actual multi-tenant deployments with separate GraphSpaces. <!-- Dosu Comment Footer --> *To reply, just mention [@dosu](https://go.dosu.dev/dosubot?utm_source=github&utm_medium=bot-comment&utm_campaign=github-comment-footer-20260415&utm_content=reply-with-mention&utm_term=apache%2Fhugegraph).* --- Share context across your team and agents. 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