Checkpoint the compressed HLog
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Key: HBASE-5403
URL: https://issues.apache.org/jira/browse/HBASE-5403
Project: HBase
Issue Type: Improvement
Reporter: Liyin Tang
Assignee: Liyin Tang
Let's assume that HBase replication can be based on replaying the HLog in the
replica cluster.
The replica process could be crash during the replay. Obviously, the replica
process need a way to start from the lastest check point in the HLog, even the
HLog is compressed.
So the proposal is to write a series of checkpoints within the HLog.
Each each checkpoint will have a header with some special sequence of bytes.
And between each checkpoints, HLog should use new dictionaries to compress.
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