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provide option to enforce minNumRacksPerWriteQuorum #1495

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reddycharan opened this issue Jun 7, 2018 · 0 comments
Closed

provide option to enforce minNumRacksPerWriteQuorum #1495

reddycharan opened this issue Jun 7, 2018 · 0 comments
Milestone
4.8.0

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@reddycharan
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FEATURE REQUEST

  1. Please describe the feature you are requesting.

#1397 introduces feature to have bookies from "minNumRacksPerWriteQuorum" number of racks per writequorum, instead of just 2 racks. But it doesn't enforces 'minNumRacksPerWriteQuorum" number of racks. If it cann't find a bookie to honor minNumRacksPerWriteQuorum then it will fallback to random. So we need an option to enforce the guarantee of minNumRacksPerWriteQuorum if it is enabled. If it cann't find a bookie to enforce the guarantee then the API in RackawareEnsemblePlacementPolicy should throw BKNotEnoughBookiesException.

  1. 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?

It is kind of must-have feature for our uses-case to provide durability guarantee across the faultzones (racks).
@reddycharan reddycharan mentioned this issue Jun 7, 2018
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reddycharan added a commit to reddycharan/bookkeeper that referenced this issue Jun 13, 2018
@reddycharan
ISSUE apache#1495: Option to enforce minNumRacksPerWriteQuorum
20e76ae 
Provide an option to enforce the guarantee of minNumRacksPerWriteQuorum
if it is enabled. If it cann't find a bookie to enforce the guarantee
then the API in RackawareEnsemblePlacementPolicy should throw
BKNotEnoughBookiesException.
reddycharan added a commit to reddycharan/bookkeeper that referenced this issue Jun 13, 2018
@reddycharan
ISSUE apache#1495: Option to enforce minNumRacksPerWriteQuorum
3a57faa 
Add configs to conf files.
reddycharan added a commit to reddycharan/bookkeeper that referenced this issue Jun 19, 2018
@reddycharan
ISSUE apache#1495: Option to enforce minNumRacksPerWriteQuorum
488b202 
Provide an option to enforce the guarantee of minNumRacksPerWriteQuorum
if it is enabled. If it cann't find a bookie to enforce the guarantee
then the API in RackawareEnsemblePlacementPolicy should throw
BKNotEnoughBookiesException.
reddycharan added a commit to reddycharan/bookkeeper that referenced this issue Jun 19, 2018
@reddycharan
ISSUE apache#1495: Option to enforce minNumRacksPerWriteQuorum
f5523c3 
Add configs to conf files.
@sijie sijie closed this as completed in 10c5103 Jun 20, 2018
@eolivelli eolivelli added this to the 4.8.0 milestone Sep 6, 2018
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@eolivelli @reddycharan