[jira] [Updated] (CASSANDRA-8572) CQLSSTableWriter shouldn't trigger cassandra specific initializations

["Sylvain Lebresne (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-8572?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sylvain Lebresne updated CASSANDRA-8572:
----------------------------------------
    Summary: CQLSSTableWriter shouldn't trigger cassandra specific initializations  (was: CQLSSTableWriter shouldn't trigger the start of the commit log)

> CQLSSTableWriter shouldn't trigger cassandra specific initializations
> ---------------------------------------------------------------------
>
>                 Key: CASSANDRA-8572
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8572
>             Project: Cassandra
>          Issue Type: Bug
>            Reporter: Benjamin Lerer
>            Priority: Minor
>
> Due to static dependencies, calling {{Keyspace.open}} trigger the creation of the {{CommitLog}} singleton which in turn trigger the start of all the threads used by the {{CommitLog}}.
> For simple client like {{CQLSSTableWriter}} that dependency is an issue as it can prevent the JVM from shutting down if the CommitLog is not shutdown explicitly. 
>   
> The following stacktrace show the initialization chain that trigger the {{CommitLog}}:
> {code}
> CommitLogSegmentManager.<init>() line: 173	
> CommitLog.<init>() line: 70	
> CommitLog.<clinit>() line: 55	
> Memtable.<init>(ColumnFamilyStore) line: 66	
> DataTracker.init() line: 378	
> DataTracker.<init>(ColumnFamilyStore) line: 54	
> ColumnFamilyStore.<init>(Keyspace, String, IPartitioner, int, CFMetaData, Directories, boolean) line: 281	
> ColumnFamilyStore.createColumnFamilyStore(Keyspace, String, IPartitioner, CFMetaData, boolean) line: 443	
> ColumnFamilyStore.createColumnFamilyStore(Keyspace, String, boolean) line: 414	
> Keyspace.initCf(UUID, String, boolean) line: 327	
> Keyspace.<init>(String, boolean) line: 280	
> Keyspace.open(String, Schema, boolean) line: 122	
> {code}



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