THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
Definition
Action type for a timeline instant
COMMITS
- A commit denotes an atomic write of a batch of records into a dataset.CLEANS
- Background activity that gets rid of older versions of files in the dataset, that are no longer needed.DELTA_COMMIT
- A delta commit refers to an atomic write of a batch of records into a Merge On Read (MOR) storage type of dataset, where some/all of the data could be just written to delta logs.COMPACTION
- Background activity to reconcile differential data structures within Hudi e.g: moving updates from row based delta log files to columnar file formats. Internally, compaction manifests as a special commit on the timelineROLLBACK
- Indicates that a commit/delta commit was unsuccessful & rolled back, removing any partial files produced during such a writeSAVEPOINT
- Marks certain file groups as “saved”, such that cleaner will not delete them. It helps restore the dataset to a point on the timeline, in case of disaster/data recovery scenarios.