How to transfer data segment from OFFLINE to ONLINE
- Dominant language
- Java
- Stars
- 6.1k
- Forks
- 1.5k
- Avg merge
- 1d 21h
- Merged PRs (30d)
- 189
Description
hi，everybody，In some tables（realtime table and offline table）, the data segment is OFFLINE, so how can it be transferred to the ONLINE state
2020/03/02 18:19:43.254 INFO [org.apache.helix.controller.stages.MessageGenerationPhase] [] Event 47b0a592_DEFAULT : IdealState changed before state transition completes for video_market-video_download_performance_basic_table_OFFLINE.video_market-video_download_performance_basic_table-1549185300000_4 on Server_10.85.126.94_8098, pendingState: ONLINE, currentState: OFFLINE, nextState: DROPPED
Contributor guide
Research direction
Start by investigating the reported OFFLINE-to-ONLINE transition for the named realtime and offline tables. Read the org.apache.helix.controller.stages.MessageGenerationPhase log entry and trace the segment's pendingState, currentState, and nextState. Done should explain how to restore the segment to ONLINE or document why the transition cannot complete.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- databases, distributed-systems
- Issue type
- Documentation
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100