To try to answer my own question: Maybe.
Using the Zimbra control panel to delete the user gives a system failure message box (the full error is below)
It did, however, make the user's account disappear from Zimbra, and deleted most of the files in the directory. I manually deleted the bad file-thinking-it-is-a-directory, and then deleted the /opt/zimbra/db/data/mailbox192 directory
Full Error for system failure dialog:
Code:
Message: system failure: dropMailboxDatabase(192)
com.zimbra.cs.service.ServiceException: system failure: dropMailboxDatabase(192)
at com.zimbra.cs.service.ServiceException.FAILURE(ServiceException.java:174)
at com.zimbra.cs.db.DbMailbox.dropMailboxDatabase(DbMailbox.java:179)
at com.zimbra.cs.mailbox.Mailbox.deleteMailbox(Mailbox.java:1518)
at com.zimbra.cs.mailbox.Mailbox.deleteMailbox(Mailbox.java:1490)
at com.zimbra.cs.service.admin.DeleteAccount.handle(DeleteAccount.java:79)
at com.zimbra.soap.SoapEngine.dispatchRequest(SoapEngine.java:261)
at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.java:162)
at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.java:84)
at com.zimbra.soap.SoapServlet.doPost(SoapServlet.java:223)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at com.zimbra.cs.servlet.ZimbraServlet.service(ZimbraServlet.java:173)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.sql.SQLException: Communications link failure due to underlying exception:
** BEGIN NESTED EXCEPTION **
java.io.EOFException
STACKTRACE:
java.io.EOFException
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1905)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2351)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2862)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1571)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1666)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2994)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:936)
at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:773)
at org.apache.commons.dbcp.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:256)
at com.zimbra.cs.db.DbMailbox.dropMailboxDatabase(DbMailbox.java:174)
at com.zimbra.cs.mailbox.Mailbox.deleteMailbox(Mailbox.java:1518)
at com.zimbra.cs.mailbox.Mailbox.deleteMailbox(Mailbox.java:1490)
at com.zimbra.cs.service.admin.DeleteAccount.handle(DeleteAccount.java:79)
at com.zimbra.soap.SoapEngine.dispatchRequest(SoapEngine.java:261)
at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.java:162)
at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.java:84)
at com.zimbra.soap.SoapServlet.doPost(SoapServlet.java:223)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
at com.zimbra.cs.servlet.ZimbraServlet.service(ZimbraServlet.java:173)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:541)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:667)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
** END NESTED EXCEPTION **
Last packet sent to the server was 2361 ms ago.
Query being executed when exception was thrown:
DROP DATABASE IF EXISTS mailbox192
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2563)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2862)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1571)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1666)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2994)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:936)
at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:773)
at org.apache.commons.dbcp.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:256)
at com.zimbra.cs.db.DbMailbox.dropMailboxDatabase(DbMailbox.java:174)
... 25 more
Error code: service.FAILURE
Method: ZmCsfeCommand.prototype.invoke
Details:soap:Receiver