{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:EMBHXNR5BQGZWGCN7KN3EOKMUX","short_pith_number":"pith:EMBHXNR5","canonical_record":{"source":{"id":"2505.13750","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2025-05-19T21:53:13Z","cross_cats_sorted":["cs.DC"],"title_canon_sha256":"21424bc8a8c79897e32c1e6a5ba4a90fa94e65b302470d92d4cceef7209a6a11","abstract_canon_sha256":"7a643d67dd62e3c389838da580fa0e3cd8ac1e38faa7ba26ec8cbe8e248c98e9"},"schema_version":"1.0"},"canonical_sha256":"23027bb63d0c0d9b184dfa9bb2394ca5c281189b91b86d6be3dbc1f4e9932c57","source":{"kind":"arxiv","id":"2505.13750","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.13750","created_at":"2026-07-05T11:05:50Z"},{"alias_kind":"arxiv_version","alias_value":"2505.13750v1","created_at":"2026-07-05T11:05:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.13750","created_at":"2026-07-05T11:05:50Z"},{"alias_kind":"pith_short_12","alias_value":"EMBHXNR5BQGZ","created_at":"2026-07-05T11:05:50Z"},{"alias_kind":"pith_short_16","alias_value":"EMBHXNR5BQGZWGCN","created_at":"2026-07-05T11:05:50Z"},{"alias_kind":"pith_short_8","alias_value":"EMBHXNR5","created_at":"2026-07-05T11:05:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:EMBHXNR5BQGZWGCN7KN3EOKMUX","target":"record","payload":{"canonical_record":{"source":{"id":"2505.13750","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2025-05-19T21:53:13Z","cross_cats_sorted":["cs.DC"],"title_canon_sha256":"21424bc8a8c79897e32c1e6a5ba4a90fa94e65b302470d92d4cceef7209a6a11","abstract_canon_sha256":"7a643d67dd62e3c389838da580fa0e3cd8ac1e38faa7ba26ec8cbe8e248c98e9"},"schema_version":"1.0"},"canonical_sha256":"23027bb63d0c0d9b184dfa9bb2394ca5c281189b91b86d6be3dbc1f4e9932c57","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:05:50.598670Z","signature_b64":"XyCiMx3zTVdarqXqYHbpzCtjIYCebsWBoHJCdHuCisfCwjI3nLBfd5pErLMKH9220PrP3m2KPuCBFNXKD6lrAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23027bb63d0c0d9b184dfa9bb2394ca5c281189b91b86d6be3dbc1f4e9932c57","last_reissued_at":"2026-07-05T11:05:50.598197Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:05:50.598197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2505.13750","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:05:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/ZDIz4S55sB0kJPWHBl2qvsrFVDJ+ERCZeEZntjK7Qi6LWreHA0AHVHKjnglXpjPSxbZrpUhY90FCQChj47JBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T12:05:23.046812Z"},"content_sha256":"4dde2235d7d69079623113bef848306c08094a611c3bea830674bf4d83c139b5","schema_version":"1.0","event_id":"sha256:4dde2235d7d69079623113bef848306c08094a611c3bea830674bf4d83c139b5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:EMBHXNR5BQGZWGCN7KN3EOKMUX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Eudoxia: a FaaS scheduling simulator for the composable lakehouse","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DC"],"primary_cat":"cs.DB","authors_text":"Ciro Greco, Jacopo Tagliabue, Tapan Srivastava","submitted_at":"2025-05-19T21:53:13Z","abstract_excerpt":"Due to the variety of its target use cases and the large API surface area to cover, a data lakehouse (DLH) is a natural candidate for a composable data system. Bauplan is a composable DLH built on \"spare data parts\" and a unified Function-as-a-Service (FaaS) runtime for SQL queries and Python pipelines. While FaaS simplifies both building and using the system, it introduces novel challenges in scheduling and optimization of data workloads. In this work, starting from the programming model of the composable DLH, we characterize the underlying scheduling problem and motivate simulations as an ef"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.13750","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2505.13750/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:05:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b8hafPGckXuBuOSQeGcidKON4Hr7NuqgW0HKvyLK69JwHLrJkPyHhawKj8bs3EJPGrHJ9OJoE5Zb879aefDMCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T12:05:23.047425Z"},"content_sha256":"a73e06f10c78be5860f2564b052b71f289d4b052fb9a9a317877ba27b06822c2","schema_version":"1.0","event_id":"sha256:a73e06f10c78be5860f2564b052b71f289d4b052fb9a9a317877ba27b06822c2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EMBHXNR5BQGZWGCN7KN3EOKMUX/bundle.json","state_url":"https://pith.science/pith/EMBHXNR5BQGZWGCN7KN3EOKMUX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EMBHXNR5BQGZWGCN7KN3EOKMUX/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-23T12:05:23Z","links":{"resolver":"https://pith.science/pith/EMBHXNR5BQGZWGCN7KN3EOKMUX","bundle":"https://pith.science/pith/EMBHXNR5BQGZWGCN7KN3EOKMUX/bundle.json","state":"https://pith.science/pith/EMBHXNR5BQGZWGCN7KN3EOKMUX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EMBHXNR5BQGZWGCN7KN3EOKMUX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:EMBHXNR5BQGZWGCN7KN3EOKMUX","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"7a643d67dd62e3c389838da580fa0e3cd8ac1e38faa7ba26ec8cbe8e248c98e9","cross_cats_sorted":["cs.DC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2025-05-19T21:53:13Z","title_canon_sha256":"21424bc8a8c79897e32c1e6a5ba4a90fa94e65b302470d92d4cceef7209a6a11"},"schema_version":"1.0","source":{"id":"2505.13750","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.13750","created_at":"2026-07-05T11:05:50Z"},{"alias_kind":"arxiv_version","alias_value":"2505.13750v1","created_at":"2026-07-05T11:05:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.13750","created_at":"2026-07-05T11:05:50Z"},{"alias_kind":"pith_short_12","alias_value":"EMBHXNR5BQGZ","created_at":"2026-07-05T11:05:50Z"},{"alias_kind":"pith_short_16","alias_value":"EMBHXNR5BQGZWGCN","created_at":"2026-07-05T11:05:50Z"},{"alias_kind":"pith_short_8","alias_value":"EMBHXNR5","created_at":"2026-07-05T11:05:50Z"}],"graph_snapshots":[{"event_id":"sha256:a73e06f10c78be5860f2564b052b71f289d4b052fb9a9a317877ba27b06822c2","target":"graph","created_at":"2026-07-05T11:05:50Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2505.13750/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Due to the variety of its target use cases and the large API surface area to cover, a data lakehouse (DLH) is a natural candidate for a composable data system. Bauplan is a composable DLH built on \"spare data parts\" and a unified Function-as-a-Service (FaaS) runtime for SQL queries and Python pipelines. While FaaS simplifies both building and using the system, it introduces novel challenges in scheduling and optimization of data workloads. In this work, starting from the programming model of the composable DLH, we characterize the underlying scheduling problem and motivate simulations as an ef","authors_text":"Ciro Greco, Jacopo Tagliabue, Tapan Srivastava","cross_cats":["cs.DC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2025-05-19T21:53:13Z","title":"Eudoxia: a FaaS scheduling simulator for the composable lakehouse"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.13750","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:4dde2235d7d69079623113bef848306c08094a611c3bea830674bf4d83c139b5","target":"record","created_at":"2026-07-05T11:05:50Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"7a643d67dd62e3c389838da580fa0e3cd8ac1e38faa7ba26ec8cbe8e248c98e9","cross_cats_sorted":["cs.DC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.DB","submitted_at":"2025-05-19T21:53:13Z","title_canon_sha256":"21424bc8a8c79897e32c1e6a5ba4a90fa94e65b302470d92d4cceef7209a6a11"},"schema_version":"1.0","source":{"id":"2505.13750","kind":"arxiv","version":1}},"canonical_sha256":"23027bb63d0c0d9b184dfa9bb2394ca5c281189b91b86d6be3dbc1f4e9932c57","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"23027bb63d0c0d9b184dfa9bb2394ca5c281189b91b86d6be3dbc1f4e9932c57","first_computed_at":"2026-07-05T11:05:50.598197Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:05:50.598197Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XyCiMx3zTVdarqXqYHbpzCtjIYCebsWBoHJCdHuCisfCwjI3nLBfd5pErLMKH9220PrP3m2KPuCBFNXKD6lrAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:05:50.598670Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.13750","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4dde2235d7d69079623113bef848306c08094a611c3bea830674bf4d83c139b5","sha256:a73e06f10c78be5860f2564b052b71f289d4b052fb9a9a317877ba27b06822c2"],"state_sha256":"b8af3395e8324375ab6d948f5ae501f71a4e2bbf168f5b67fb1485b5699997ec"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0/kb1IpVOeP3UhvSlDQ4XRW+e3HR1Z74AKzDjwqJ2ZAUycMzEfQGhCx4UIPN4nqQCyKWGkh8teWVDZVu13SsCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T12:05:23.052440Z","bundle_sha256":"f6b82ff614c9541a6e8826ab4ddb090aba4d77bfdc5e2d651b8d157b5e16470d"}}