This is a storage backend using Yandex.Database for Jaeger

• collector/query: these are docker images with jaeger-collector/jaeger-query and plugin built-in into image
• watcher (see cmd/schema/watcher): this is schema-watcher that creates new tables for spans/indexes and removes old ones

• cr.yandex/yc/jaeger-ydb-collector
• cr.yandex/yc/jaeger-ydb-query
• cr.yandex/yc/jaeger-ydb-watcher

cp docker-compose.example.yml docker-compose.yml
# edit docker-compose yml to set db dsn
docker-compose up -d

• YDB_ADDRESS (string): db endpoint host:port to connect to
• YDB_SA_META_AUTH (bool): use metadata to authorize requests (documentation)
• YDB_SA_ID (string): service account id for Yandex.Cloud authorization (doc on service accounts: https://cloud.yandex.com/docs/iam/concepts/users/service-accounts)
• YDB_SA_KEY_ID (string): service account key id for Yandex.Cloud authorization
• YDB_SA_PRIVATE_KEY_FILE (string): path to service account private key for Yandex.Cloud authorization
• YDB_PATH (string): database path
• YDB_FOLDER (string): folder to store data in)
• YDB_CONNECT_TIMEOUT (duration, default: 10s): db connect timeout
• YDB_WRITE_TIMEOUT (duration, default: 1s): write queries timeout
• YDB_READ_TIMEOUT (duration, default: 10s): read queries timeout
• YDB_READ_QUERY_PARALLEL (integer, default: 16): controls number of parallel read subqueries
• YDB_POOL_SIZE (integer, default: 100): db session pool size
• YDB_QUERY_CACHE_SIZE (integer, default: 50): db query cache size
• YDB_WRITER_BUFFER_SIZE (integer, default: 1000): span buffer size for batch writer
• YDB_WRITER_BATCH_SIZE (integer, default: 100): number of spans in batch write calls
• YDB_WRITER_BATCH_WORKERS (integer, default: 10): number of workers processing batch writes
• YDB_INDEXER_BUFFER_SIZE (integer, default: 1000): span buffer size for indexer
• YDB_INDEXER_MAX_TRACES (integer, default: 100): maximum trace_id count in a sinigle index record
• YDB_INDEXER_MAX_TTL (duration, default: 5s): maximum amount of time for indexer to batch trace_idы for index records
• YDB_SCHEMA_NUM_PARTITIONS (integer, default: 10): number of partitioned tables per day. Changing it requires recreating full data set
• YDB_TOKEN (string): auth token for internal purposes

• WATCHER_AGE (duration, default: 24h): delete partition tables older than this value
• WATCHER_INTERVAL (duration, default: 5m): check interval

• https://youtu.be/nyt_e4ULrUo?t=660
• https://youtu.be/hXH_tRBxFnA?t=11471