[SENTRY-1682] Investigate use of EXPORT for replication for initial HMS snapshot

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Information Provided
• Fix Version/s: 2.0.0
• Component/s: Sentry
• Assignee: Sergio Peña
• Reporter: Alex Kolbasov
• Created: 30/Mar/17 21:18
• Updated: 07/Aug/17 17:08
• Resolved: 07/Aug/17 17:08

Description

mohitsabharwal mentioned that Hive supports

 EXPORT ...  for replication('somerandomstring')

command,
It will dump the last notification id that EXPORT sees (in the export metadata json).

i.e. if this works as documented, then EXPORT is telling you what is the last notification that EXPORT saw before executing.

This can be used for ontaining consistent initial snapshot instead of the current conservative stop-the0world scheme.

We should explore this.