cc919b08c2
This PR enhances S3 throughput by leveraging every available shard to upload backup files concurrently. By distributing the load across multiple shards, we significantly improve the upload performance. Each shard retrieves an SSTable and processes its files sequentially, ensuring efficient, file-by-file uploads. To prevent uncontrolled fiber creation and potential resource exhaustion, the backup task employs a directory semaphore from the sstables_manager. This mechanism helps regulate concurrency at the directory level, ensuring stable and predictable performance during large-scale backup operations. Refs #22460 fixes: #22520 ``` =========================================== Release build, master, smp-16, mem-32GiB Bytes: 2342880184, backup time: 9.51 s =========================================== Release build, this PR, smp-16, mem-32GiB Bytes: 2342891015, backup time: 1.23 s =========================================== ``` Looks like it is faster at least x7.7 No backport needed since it (native backup) is still unused functionality Closes scylladb/scylladb#23727 * github.com:scylladb/scylladb: backup: Add test for invalid endpoint backup_task: upload on all shards backup_task: integrate sharded storage manager for upload
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.