Backup fails with Milvus master due to new parquet-based binlog path format

[zhuwenxing]

Summary

Milvus backup fails when running against Milvus master (nightly build master-20260309-bc9b741) because the insert log path format has changed to a new parquet-based format that the current path parser does not recognize.

Error

Error: create: execute task: backup: run collection task: backup: execute collection strategy: backup: execute dml task backup: wait task backup: execute task backup: execute dml task backup: get segments backup: get segment backup: get segment info backup: list insert logs backup: parse log path mpath: log path files/insert_log/464794107665636903/464794107665636904/464794107665786973/_data/0_010464ea-7aa4-47da-9722-81795c1f3edc.parquet is not match the pattern

Root Cause

The current insert log path regex in internal/storage/mpath/path.go:228 expects:

insert_log/{collectionID}/{partitionID}/{segmentID}/{fieldID}/{logID}

But Milvus master now produces paths like:

insert_log/{collectionID}/{partitionID}/{segmentID}/_data/{index}_{uuid}.parquet

The _data segment and {index}_{uuid}.parquet filename do not match the existing pattern (\d+)/(\d+).

Affected CI Jobs

All nightly CI jobs using master-latest are failing at the Backup step:

• Backup and restore secondary (master-latest)
• Backup and restore with rbac config (helm, standalone, master-latest)
• Backup and restore after upgrade (docker-compose, standalone, standalone, 2.5-latest, master-latest)
• Backup and restore cli (docker-compose, standalone, standalone, master-latest)

CI run: https://github.com/zilliztech/milvus-backup/actions/runs/22846884679?pr=973

Expected Behavior

milvus-backup should be able to parse the new parquet-based binlog path format and successfully back up collections from Milvus master.

[huanghaoyuanhhy]

We may need to disable this on master first to unblock other CI jobs, and re-enable it once we've adapted to the new parquet-based path format.