[jira] [Created] (JAMES-3780) ExpireMailboxTask should support large number of users

["Karsten Otto (Jira)" <se...@james.apache.org>]

Karsten Otto created JAMES-3780:
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             Summary: ExpireMailboxTask should support large number of users
                 Key: JAMES-3780
                 URL: https://issues.apache.org/jira/browse/JAMES-3780
             Project: James Server
          Issue Type: Bug
          Components: mailbox, webadmin
    Affects Versions: master
            Reporter: Karsten Otto


Deleting old messages via the ExpireMailboxTask fails with the dreaded
{code:java}
java.lang.IllegalStateException: Iterating over a toIterable() / toStream() is blocking, which is not supported in thread parallel-2
{code}
 

Observed on Cassandra implementation with ~400 users.

This is caused by the user list being a BlockingIterable; for a small number of users this will not occur, but for a larger number it blocks to retrieve another "chunk" of user names.



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