DbLedgerStorage does not persist ExplicitLAC: Information (Header) of TransientLedgerInfo is not persisted

[reddycharan]

FEATURE REQUEST

1. Please describe the feature you are requesting.

TransientLedgerInfo class borrows the logic from FileInfo, which is used for holding all the transient states for a given ledger when DbLedgerStorage is used for LedgerStorage. But unlike FileInfo, in TransientLedgerInfo, Header (containing masterKey, stateBits and explicitLac) is not defined and it is not persisted.

2. Indicate the importance of this issue to you (blocker, must-have, should-have, nice-to-have). Are you currently using any workarounds to address this issue?

With #1527 we are going to persist explicitLac, but since TransientLedgerInfo doesn't has Header/persistence logic, for now I'm going to ignore persisting explicitLac logic in TransientLedgerInfo/DbLedgerStorage case.

Check Ignored test case here:
https://github.com/apache/bookkeeper/blob/master/bookkeeper-server/src/test/java/org/apache/bookkeeper/client/ExplicitLacTest.java#L145

[reddycharan]

Hey @sijie , as we discussed earlier, created open issue for Header/persistence logic in TransientLedgerInfo

@merlimat FYI

[eolivelli]

This means that with DbLedgerStorage we will not persist ExplicitLAC ?
Are you planning to implement it in a follow up patch? Otherwise we should take care of documenting this important difference in DbLedgerStorage vs SortedLedgerStorage

[eolivelli]

I am working on this task.
Hopefully we can deliver this fix for 4.12.0.