Module mz_persist_client::batch
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A handle to a batch of updates
Modules§
- Nested message and enum types in
ProtoFetchBatchFilter.
Structs§
- A handle to a batch of updates that has been written to blob storage but which has not yet been appended to a shard.
- A builder for Batches that allows adding updates piece by piece and then finishing it.
- A snapshot of dynamic configs to make it easier to reason about an individual run of BatchBuilder.
- This is only to impl ExchangeData, and so used between processes running the same version of code. It’s not durably written down anywhere.
- A list of (lowercase) column names that persist will always retain stats for, even if it means going over the stats budget.
Enums§
- Indicates what work was done in a call to BatchBuilder::add
- Pending 🔒Either a handle to a task that returns a value or the value itself.
Constants§
- A target maximum size of blob payloads in bytes. If a logical “batch” is bigger than this, it will be broken up into smaller, independent pieces. This is best-effort, not a guarantee (though as of 2022-06-09, we happen to always respect it). This target size doesn’t apply for an individual update that exceeds it in size, but that scenario is almost certainly a mis-use of the system.
Functions§
- Returns the total sum of diffs or None if there were no updates.