RE: [External] Re: minor compaction same as flush

Thanks Christopher for detailed explanation. Appreciated your response! -S -Original Message- From: Christopher Sent: Thursday, April 14, 2022 3:33 PM To: accumulo-user Subject: [External] Re: minor compaction same as flush Ed's description is slightly wrong: Yes, flush i

Re: minor compaction same as flush

Ed's description is slightly wrong: Yes, flush is the same as a minor compaction, writing in-memory data to an RFile. The shell calls this a "flush", because it's a more intuitive name than "minor compaction". In the technical documentation, it could be referred to as either, and some of our confi

Re: minor compaction same as flush

Just a small correction re: > Major compactions combine all files into a single file. Minor compactions > select a subset of files can combines them into a file. Minor compactions are when in-memory data is written to files. Major compactions are when files are combined. Major compactions can i

RE: minor compaction same as flush

Thanks Ed, Appreciated your clarification! -S From: dev1 Sent: Thursday, April 14, 2022 9:36 AM To: 'user@accumulo.apache.org' Subject: [External] RE: minor compaction same as flush Flush and compactions are different actions. Flush - sorts and writes current, in-memory changes

RE: minor compaction same as flush

Flush and compactions are different actions. Flush - sorts and writes current, in-memory changes to a file. This can reduce the amount of recovery in case of a failure because the flushed entries do not need to be processed from the WAL. Compactions combine multiple files into a single file.