Module mz_compute_types::dyncfgs

Dyncfgs used by the compute layer.

Constants

• COMPUTE_REPLICA_EXPIRATION_OFFSET
  The maximum lifetime of a replica configured as an offset to the replica start time. Used in temporal filters to drop diffs generated at timestamps beyond the expiration time.
• COMPUTE_SERVER_MAINTENANCE_INTERVAL
  The interval at which the compute server performs maintenance tasks.
• COPY_TO_S3_ARROW_BUILDER_BUFFER_RATIO
  See src/storage-operators/src/s3_oneshot_sink/parquet.rs for more details.
• COPY_TO_S3_MULTIPART_PART_SIZE_BYTES
  The size of each part in the multi-part upload to use when uploading files to S3.
• COPY_TO_S3_PARQUET_ROW_GROUP_FILE_RATIO
  See src/storage-operators/src/s3_oneshot_sink/parquet.rs for more details.
• DATAFLOW_MAX_INFLIGHT_BYTES
  Maximum number of in-flight bytes emitted by persist_sources feeding dataflows.
• DATAFLOW_MAX_INFLIGHT_BYTES_CC
  The “physical backpressure” of compute_dataflow_max_inflight_bytes_cc has been replaced in cc replicas by persist lgalloc and we intend to remove it once everything has switched to cc. In the meantime, this is a CYA to turn it back on if absolutely necessary.
• ENABLE_CHUNKED_STACK
  Enable the chunked stack implementation.
• ENABLE_COLUMNATION_LGALLOC
  Enable lgalloc for columnation.
• ENABLE_COMPUTE_REPLICA_EXPIRATION
  Main switch to enable or disable replica expiration.
• ENABLE_LGALLOC_EAGER_RECLAMATION
  Enable lgalloc’s eager memory return/reclamation feature.
• ENABLE_MATERIALIZED_VIEW_SINK_V2
  Whether rendering should use the new MV sink implementation.
• ENABLE_MZ_JOIN_CORE
  Whether rendering should use mz_join_core rather than DD’s JoinCore::join_core.
• HYDRATION_CONCURRENCY
  The number of dataflows that may hydrate concurrently.
• LGALLOC_BACKGROUND_INTERVAL
  The interval at which the background thread wakes.
• LGALLOC_SLOW_CLEAR_BYTES
  The bytes to reclaim (slow path) per size class, for each background thread activation.
• LINEAR_JOIN_YIELDING
  The yielding behavior with which linear joins should be rendered.

Functions

• all_dyncfgs
  Adds the full set of all compute Configs.