Konstantin Knizhnik aad809b048 Fix issues with prefetch ring buffer resize (#9847) ...

## Problem

See https://neondb.slack.com/archives/C04DGM6SMTM/p1732110190129479


We observe the following error in the logs 
```
[XX000] ERROR: [NEON_SMGR] [shard 3] Incorrect prefetch read: status=1 response=0x7fafef335138 my=128 receive=128
```
most likely caused by changing `neon.readahead_buffer_size`

## Summary of changes

1. Copy shard state
2. Do not use prefetch_set_unused in readahead_buffer_resize
3. Change prefetch buffer overflow criteria

---------

Co-authored-by: Konstantin Knizhnik <knizhnik@neon.tech>

2024-12-01 15:47:28 +00:00

..

data/extension_test/5670669815

[compute/postgres] feature: PostgreSQL 17 (#8573)

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test_ancestor_branch.py

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test_attach_tenant_config.py

pageserver: add tenant config override for wal receiver proto (#9888)

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test_auth_broker.py

[auth_broker]: regress test (#9541)

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test_auth.py

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test_backpressure.py

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test_bad_connection.py

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test_basebackup_error.py

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test_branch_and_gc.py

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test_branch_behind.py

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test_branching.py

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test_broken_timeline.py

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test_build_info_metric.py

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test_change_pageserver.py

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test_clog_truncate.py

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test_close_fds.py

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test_combocid.py

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test_compaction.py

safekeeper: use protobuf for sending compressed records to pageserver (#9821)

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test_compatibility.py

Python 3.11 (#9515)

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test_compute_catalog.py

fix(compute_ctl): Allow usage of DB names with whitespaces (#9919)

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test_compute_locales.py

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test_compute_metrics.py

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test_config.py

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test_crafted_wal_end.py

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test_createdropdb.py

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test_createuser.py

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test_ddl_forwarding.py

build(deps): bump mypy from 1.3.0 to 1.13.0 (#9670)

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test_disk_usage_eviction.py

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test_download_extensions.py

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test_endpoint_crash.py

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test_explain_with_lfc_stats.py

test_runner: use LFC by default (#8613)

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test_extensions.py

compute_ctl: Add endpoint that allows extensions to be installed (#9344)

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test_fsm_truncate.py

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test_fullbackup.py

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test_gc_aggressive.py

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test_gin_redo.py

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test_hot_standby.py

test_runner: use LFC by default (#8613)

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test_import_pgdata.py

fast imports: initial Importer and Storage changes (#9218)

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test_import.py

pageserver: fix spurious error logs in timeline lifecycle (#9589)

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test_ingestion_layer_size.py

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test_installed_extensions.py

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test_large_schema.py

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test_layer_bloating.py

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test_layer_eviction.py

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test_layer_writers_fail.py

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test_layers_from_future.py

fix(pageserver): ensure upload happens after delete (#9844)

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test_lfc_resize.py

test_runner: use LFC by default (#8613)

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test_lfc_working_set_approximation.py

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test_local_file_cache.py

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test_logging.py

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test_logical_replication.py

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test_lsn_mapping.py

Python 3.11 (#9515)

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test_migrations.py

Grant access to pg_show_replication_origin_status for neon_superuser

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test_multixact.py

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test_neon_cli.py

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test_neon_extension.py

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test_neon_local_cli.py

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test_neon_superuser.py

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test_next_xid.py

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test_normal_work.py

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test_oid_overflow.py

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test_old_request_lsn.py

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test_ondemand_download.py

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test_ondemand_slru_download.py

Python 3.11 (#9515)

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test_ondemand_wal_download.py

Register custom xlog reader callbacks for on-demand WAL download in StartupDecodingContext (#9007)

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test_pageserver_api.py

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test_pageserver_catchup.py

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test_pageserver_crash_consistency.py

fix(test_regress): always use storcon virtual pageserver API to set tenant config (#9622)

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test_pageserver_generations.py

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test_pageserver_getpage_throttle.py

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test_pageserver_layer_rolling.py

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test_pageserver_metric_collection.py

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test_pageserver_reconnect.py

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test_pageserver_restart.py

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test_pageserver_restarts_under_workload.py

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test_pageserver_secondary.py

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test_parallel_copy.py

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test_pg_query_cancellation.py

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test_pg_regress.py

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test_pg_waldump.py

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test_physical_and_logical_replicaiton.py

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test_physical_replication.py

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test_pitr_gc.py

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test_postgres_version.py

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test_prefetch_buffer_resize.py

Fix issues with prefetch ring buffer resize (#9847)

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test_proxy_allowed_ips.py

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test_proxy_metric_collection.py

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test_proxy_websockets.py

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test_proxy.py

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test_read_validation.py

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test_readonly_node.py

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test_recovery.py

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test_remote_storage.py

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test_replica_start.py

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test_role_grants.py

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test_s3_restore.py

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test_setup.py

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test_sharding.py

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test_sni_router.py

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test_storage_controller.py

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test_storage_scrubber.py

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test_subscriber_restart.py

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test_subxacts.py

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test_tenant_conf.py

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test_tenant_delete.py

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test_tenant_detach.py

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test_tenant_size.py

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test_tenant_tasks.py

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test_tenants_with_remote_storage.py

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test_tenants.py

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test_threshold_based_eviction.py

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test_timeline_archive.py

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test_timeline_delete.py

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test_timeline_detach_ancestor.py

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test_vm_bits.py

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test_vm_truncate.py

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test_wal_acceptor_async.py

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