[jira] [Created] (CASSANDRA-10273) Reduce number of data directory scans during startup

["Robert Stupp (JIRA)" <ji...@apache.org>]

Robert Stupp created CASSANDRA-10273:
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             Summary: Reduce number of data directory scans during startup
                 Key: CASSANDRA-10273
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-10273
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Robert Stupp
            Priority: Minor


ATM we scan each data directory four times. We could easily reduce that to at least two, maybe to one.

1. pre-flight (startup tests) scrub
1. pre-flight (startup tests) sstable min version
1. {{ColumnFamilyStore.createColumnFamilyStore}}
1. {{ColumnFamilyStore.<init>}} (if {{loadSSTables==true}})

First two pre-flight tests could be combined to one and 3+4 could also be combined, as both appear at pretty related code paths.



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