Anastasia Braginsky created HBASE-18748:
-------------------------------------------
Summary: Cache pre-warming upon replication
Key: HBASE-18748
URL: https://issues.apache.org/jira/browse/HBASE-18748
Project: HBase
Issue Type: New Feature
Reporter: Anastasia Braginsky
HBase's cluster replication is very important and widely used feature. Let's
assume primary cluster is replicated to secondary (backup) cluster using the
WAL of the primary cluster to propagate the changes. Let's also assume the
secondary cluster is a target for failover when needed and should become
primary when needed.
We suggest improving the way the HBase cluster failover works today. Namely,
upon failover, the backup RS's cache is cold. Warming it up to the right
working set takes many minutes. The suggested solution is to selectively replay
read requests at the backup - namely, those reads that caused cache-ins at the
primary. We intend to use WAL replication as transport protocol (hopefully, as
black box), and of course add custom replay callbacks.
--
This message was sent by Atlassian JIRA
(v6.4.14#64029)
