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Posted to commits@pulsar.apache.org by GitBox <gi...@apache.org> on 2019/03/23 22:25:52 UTC

[GitHub] [pulsar] merlimat opened a new pull request #3890: By default use `journalFormatVersionToWrite=5` for Bookie journal

merlimat opened a new pull request #3890: By default use `journalFormatVersionToWrite=5` for Bookie journal
URL: https://github.com/apache/pulsar/pull/3890
 
 
   ### Motivation
   
   In BookKeeper 4.9.0 the default value for `journalFormatVersionToWrite` has been bumped to `6`. While version 6 is supported in BK 4.8, in Pulsar we have jumped from 4.7.2 (in Pulsar 2.2) to 4.9.0 (in Pulsar 2.3). 
   
   That means that, with default configuration the rollback of bookies from 2.3 to 2.2 is failing.
   
   We need to ensure that it's always possible to rollback the entire Pulsar distribution to the previous minor version.
   
   For that, fixing explicitely the bookie journal version in the `bookkeeper.conf` that we ship.
   
   

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