Fields DataBase - FDB Documentation#
- Version:
5.22.2
The FDB (Fields DataBase) is a domain-specific object store developed at ECMWF for storing, indexing and retrieving meteorological data. The data objects to be stored should be self-describing (messages), and are stored and indexed according to their semantic metadata (such as ‘atmospheric level’ or ‘physical parameter’). A set of messages can be retrieved specifying a request using a specific language developed for accessing the MARS Archive.
Contents
- Introduction
- MARS request
- Setting up FDB
- Environment variables
FDB_CONFIGFDB5_CONFIGFDB_SUB_TOCSFDB_CONFIG_FILEFDB5_CONFIG_FILE- Configuration file locations
FDB_SCHEMA_FILEFDB_ROOTS_FILEFDB_SPACES_FILEFDB_DBNAMES_FILEFDB_ENGINES_FILEFDB_EXPVER_FILE- Root and file-space selection
FDB_ROOT_DIRECTORYFDB_ROOTFDB5_ROOTFDB_FILESPACEHANDLER_ENVVARNAME- Write behaviour
FDB_ASYNC_WRITEFDB_WRITE_TO_NULLFDB_DATA_SYNC_ON_FLUSHFDB_DATA_WRITE_QUEUE_LENGTHFDB_DEDUPLICATE_FIELDS- Read behaviour
FDB_CACHE_TOCS_ON_READFDB_OPEN_NOATIMEFDB_SEEKABLE_DATA_HANDLEFDB_READ_LIMITFDB_LOAD_INDEX_THREADSFDB_SEARCH_CASESENSITIVE_DB- Lustre striping
FDB_HANDLE_LUSTRE_STRIPEFDB_DATA_LUSTRE_STRIPE_COUNTFDB_DATA_LUSTRE_STRIPE_SIZEFDB_INDEX_LUSTRE_STRIPE_COUNTFDB_INDEX_LUSTRE_STRIPE_SIZE- Indexing
FDB_INDEX_TYPE- Auxiliary data
FDB_AUX_EXTENSIONS- Serialisation version
FDB_SERIALISATION_VERSIONFDB5_SERIALISATION_VERSION
- CLI Tools
- API Reference
- License