Ferenc Szili 4ca40929ef test: add read barrier to test_balance_empty_tablets ...

The test creates a single node cluster, then creates 3 tables which
remain empty. Then it adds another node with half the disk capacity of
the first one, and then it waits for the balancer to migrate tablets to
the newly added node by calling the quiesce topology API. The number of
tablets on the smaller node should be exactly half the number of tablets
on the larger node.

After waiting for quiesce topology, we could have a situation where we
query the number of tablets from the node which still hasn't processed
the last tablet migrations and updated system.tablets.

This patch adds a read barrier so that both nodes see the same tablets
metadata before we query the number of tablets.

Fixes: SCYLLADB-603

Closes scylladb/scylladb#28598

2026-02-12 11:16:34 +02:00

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auth_cluster

Merge 'test: pylib: scylla_cluster: set shutdown_announce_in_ms to 0' from Patryk Jędrzejczak

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dtest

Merge 'test: migrate guardrails_test.py from scylla-dtest' from Andrzej Jackowski

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lwt

test.py: remove deprecated skip_mode decorator

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mv

topology: disable force-gossip-topology-changes option

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object_store

Merge 'restore: Enable direct download of fully contained SSTables' from Ernest Zaslavsky

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random_failures

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tasks

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__init__.py

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conftest.py

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suite.yaml

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test_aggregation.py

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test_alternator_proxy_protocol.py

test: test_alternator_proxy_protocol: wait for the node to report itself as serving

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test_alternator.py

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test_automatic_cleanup.py

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test_bad_initial_token.py

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test_batchlog_manager.py

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test_blocked_bootstrap.py

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test_boot_nodes.py

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test_cdc_generation_data.py

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test_cdc_generation_publishing.py

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test_cdc_with_alter.py

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test_cdc_with_tablets.py

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test_change_ip.py

test.py: add pid to ServerInfo

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test_change_replication_factor_1_to_0.py

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test_change_rpc_address.py

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test_client_routes.py

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test_cluster_features.py

test: test_downgrade_after_partial_upgrade: check that feature is disabled on all nodes after partial upgrade

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test_commitlog_segment_data_resurrection.py

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test_commitlog.py

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test_concurrent_schema.py

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test_config_live_updates.py

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test_config.py

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test_conflicting_keys_read_repair.py

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test_coordinator_queue_management.py

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test_counter_write_timeout_metric.py

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test_counters_with_tablets.py

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test_crash_coordinator_before_streaming.py

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test_create_table_during_node_shutdown.py

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test_data_resurrection_after_cleanup.py

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test_data_resurrection_in_memtable.py

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test_decommission_kill_then_replace.py

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test_decommission.py

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test_deprecating_cluster_features.py

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test_describe.py

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test_different_group0_ids.py

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test_encryption.py

test_encryption: capture stderr

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test_error_becoming_voter.py

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test_fencing.py

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test_global_ignore_nodes.py

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test_gossiper_empty_self_id_on_shadow_round.py

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test_gossiper_orphan_remover.py

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test_gossiper_race.py

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test_gossiper.py

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test_group0_recovers_after_partial_command_application.py

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test_hints.py

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test_incremental_repair.py

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test_initial_token.py

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test_internode_compression.py

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test_ip_mappings.py

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test_keyspace_rf.py

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test_left_node_notification.py

raft topology: Notify that a node was removed only once

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test_long_join.py

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test_long_query_timeout_erm.py

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test_lwt_semaphore.py

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test_maintenance_mode.py

test: test_maintenance_mode: enable maintenance mode properly

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test_major_compaction.py

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test_metadata_id.py

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test_multidc.py

db: fail reads and writes with local consistencty level to a DC with RF=0

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test_mutation_schema_change.py

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test_mv.py

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test_no_dc_rack_change.py

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test_no_removed_node_event_on_ip_change.py

test.py: add pid to ServerInfo

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test_node_isolation.py

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test_node_ops_metrics.py

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test_nodetool.py

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test_not_enough_token_owners.py

test: cluster: Fix NoHostAvailable error in test_not_enough_token_owners

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test_proxy_protocol.py

test: test_proxy_protocol: bump timeout

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test_query_rebounce.py

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test_raft_cluster_features.py

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test_raft_recovery_entry_loss.py

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test_raft_recovery_user_data.py

test: test_raft_recovery_user_data: prevent repeated ALTER KEYSPACE request

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test_raft_snapshot_request.py

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test_random_tables.py

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test_read_repair.py

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test_refresh.py

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test_size_based_load_balancing.py

test: add read barrier to test_balance_empty_tablets

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test_tablets_parallel_decommission.py

test: test_tablets_parallel_decommission: prevent group0 majority loss

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test_tablets_removenode.py

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test_topology_ops_encrypted.py

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test_vector_store.py

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test_view_build_status.py

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test_zero_token_nodes_multidc.py

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util.py

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