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scylladb/test
Botond Dénes 4c832d583e Merge 'repair: Speed up ranges calculation when small table optimization is on' from Asias He
repair: Speed up ranges calculation when small table optimization is on

Normally, during bootstrap, in repair_service::bootstrap_with_repair, we
need to calculate which range to sync data from carefully for the new
node. With small table optimization on, we pass a single full range and
all peer nodes to row level repair to sync data with. Now that we only
need to pass a single range and full peers, there is no need to calculate
the ranges and peers in repair_service::bootstrap_with_repair and drop
it later. The calculation takes time which slows down bootstrap, e.g.,

```
Jul 08 22:01:41.927785 cluster-scale-50-200-test-scayle-t-db-node-51209daa-93 scylla[5326]:
[shard 0:strm] repair - bootstrap_with_repair: started with
keyspace=system_distributed_everywhere, nr_ranges=23809

Jul 08 22:01:57.883797 cluster-scale-50-200-test-scayle-t-db-node-51209daa-93 scylla[5326]:
[shard 0:strm] repair - repair[79eac1a1-5d5b-4028-ae1c-06e68bec2d50]:
sync data for keyspace=system_distributed_everywhere, status=started,
reason=bootstrap, small_table_optimization=true
```

The range calculation took 15 seconds for system_distributed_everywhere
table.

To fix, the ranges calculation is skipped if small table optimization is
on for the keyspace.

Before:
cluster    dev   [ PASS ] cluster.test_boot_nodes.1 104.59s

After:
cluster    dev   [ PASS ] cluster.test_boot_nodes.1 89.23s

A 15% improvement to bootstrap 30 node cluster was observed.

Fixes #24817

Closes scylladb/scylladb#24901

* github.com:scylladb/scylladb:
  repair: Speed up ranges calculation when small table optimization is on
  test: Add test_boot_nodes.py
2025-07-17 10:23:45 +03:00
..

Scylla in-source tests.

For details on how to run the tests, see docs/dev/testing.md

Shared C++ utils, libraries are in lib/, for Python - pylib/

alternator - Python tests which connect to a single server and use the DynamoDB API unit, boost, raft - unit tests in C++ cqlpy - Python tests which connect to a single server and use CQL topology* - tests that set up clusters and add/remove nodes cql - approval tests that use CQL and pre-recorded output rest_api - tests for Scylla REST API Port 9000 scylla-gdb - tests for scylla-gdb.py helper script nodetool - tests for C++ implementation of nodetool

If you can use an existing folder, consider adding your test to it. New folders should be used for new large categories/subsystems, or when the test environment is significantly different from some existing suite, e.g. you plan to start scylladb with different configuration, and you intend to add many tests and would like them to reuse an existing Scylla cluster (clusters can be reused for tests within the same folder).

To add a new folder, create a new directory, and then copy & edit its suite.ini.