Information about the ReadSession.
Attributes
- dataFormat
Immutable. Data format of the output data. DATA_FORMAT_UNSPECIFIED not supported.
- estimatedRowCount
Output only. An estimate on the number of rows present in this session's streams. This estimate is based on metadata from the table which might be incomplete or stale.
- estimatedTotalBytesScanned
Output only. An estimate on the number of bytes this session will scan when all streams are completely consumed. This estimate is based on metadata from the table which might be incomplete or stale.
- expireTime
Output only. Time at which the session becomes invalid. After this time, subsequent requests to read this Session will return errors. The expire_time is automatically assigned and currently cannot be specified or updated.
- name
Output only. Unique identifier for the session, in the form
projects/{project_id}/locations/{location}/sessions/{session_id}
.- readOptions
Optional. Read options for this session (e.g. column selection, filters).
- streams
Output only. A list of streams created with the session. At least one stream is created with the session. In the future, larger request_stream_count values may result in this list being unpopulated, in that case, the user will need to use a List method to get the streams instead, which is not yet available.
- table
Immutable. Table that this ReadSession is reading from, in the form
projects/{project_id}/datasets/{dataset_id}/tables/{table_id}
- tableModifiers
Optional. Any modifiers which are applied when reading from the specified table.
- traceId
Optional. ID set by client to annotate a session identity. This does not need to be strictly unique, but instead the same ID should be used to group logically connected sessions (e.g. All using the same ID for all sessions needed to complete a Spark SQL query is reasonable). Maximum length is 256 bytes.
- Companion:
- object
- Source:
- ReadSession.scala
- Graph
- Supertypes
- trait Updatable[ReadSession]trait GeneratedMessagetrait Serializabletrait Producttrait Equalsclass Objecttrait Matchableclass Any