question Re: Hbase read replica performing Compaction - Strange issue in Support Questions

Hbase read replica performing Compaction - Strange issue

csguna — Mon, 16 Sep 2024 13:52:23 GMT

We enabled Hbase read replica - However we bump into this situtation we observed that read replica cluster is still doing compaction and Primary cluster is reporting a FileNotFound Exception for multiple regions.

What could be the reason for this ? Is there any specific configuration parameter that is enabled ?

Re: Hbase read replica performing Compaction - Strange issue

shubham_sharma — Wed, 18 Sep 2024 19:14:53 GMT

Hi @csguna

We can check below for read replica properties which can be configured -

https://docs.cloudera.com/cdp-private-cloud-base/7.1.9/hbase-high-availability/topics/hbase-read-replica-properties.html

Compaction would be carried out for primary region according to design. Flushes, compactions and bulk loads can change the list of files. This means that the secondaries will need to discover the file changes, but until all secondaries are in sync, the old store files should not be deleted.

Re: Hbase read replica performing Compaction - Strange issue

csguna — Thu, 19 Sep 2024 05:53:05 GMT

Hi Thanks for the link however my question is Read replica is performing
compaction , any reason why it is so ? where should we look into to fix
this issue?
Since replication is done by readonly cluster it is deleting and causing
FileNotFoundException