[BOOKKEEPER-879] Record ledger creation time

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.3.1
• Fix Version/s: 4.4.0
• Component/s: bookkeeper-client, bookkeeper-server
• Assignee: Enrico Olivelli
• Reporter: Enrico Olivelli
• Created: 09/Nov/15 11:32
• Updated: 16/May/16 21:47
• Resolved: 23/Feb/16 18:17

Description

I think that a creation timestamp would be very useful and it does not cost very much. It would be an immutable value.
Nowadays (on 4.3.1) I must keep that info together with the id of the ledger, for instance in zookeeper, but if that reference gets lost there is now way to know how old a ledger is.

I think that this timestamp should be captured on client while calling createLedger or asyncCreateLedger.

In addition to this very common field maybe it would be useful to add a custom byte[] field named "custom client data" in order to let the client 'describe' the ledger without the need of extra data on Zookeeper.