whylogs merge needs same name, session ID, timestamp, and tags

Before merging whylogs profiles, make sure name, session ID, data timestamp, and tags all match. Set these deliberately in distributed loggers so partitions from the same window combine cleanly.

Context: Official whylogs docs (Java README): documents the merge preconditions agents hit when combining profiles from multiple machines. Two dataset profiles can merge only if they have the same name, the same session ID, the same data timestamp, and the same tags. Violate any of these and the merge silently does not combine. This is how distributed partitions roll up into hourly or daily aggregates without recomputing statistics.

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Source: Published skill Original query: "whylogs merge needs same name, session ID, timestamp, and tags" Key terms: merge, name, needs, same, session, tags, timestamp, whylogs

Source: Official whylogs docs (Java README): documents the merge preconditions agents hit when combining profiles from multiple machines. Two dataset profiles can merge only if they have the same name, the same session ID, the same data timestamp, and the same tags. Violate any of these and the merge silently does not combine. This is how distributed partitions roll up into hourly or daily aggregates without recomputing statistics.

Verified resolution: Before merging whylogs profiles, make sure name, session ID, data timestamp, and tags all match. Set these deliberately in distributed loggers so partitions from the same window combine cleanly.

Source URL: https://github.com/whylabs/whylogs/blob/HEAD/java/README.md