5.9.0

Version 5.9.0 [V5-DEVEL] (rgerhards), 2011-06-08

• imfile: added $InputFileMaxLinesAtOnce directive
• enhanced imfile to support input batching
• added capability for imtcp and imptcp to activate keep-alive packets
  at the socket layer. This has not been added to imttcp, as the latter is
  only an experimental module, and one which did not prove to be useful.
  reference: http://kb.monitorware.com/post20791.html

• added support to control KEEPALIVE settings in imptcp
  this has not yet been added to imtcp, but could be done on request.

• $ActionName is now also used for naming of queues in impstats
  as well as in the debug output

• bugfix: do not open files with full privileges, if privs will be dropped
  This make the privilege drop code more bulletproof, but breaks Ubuntu’s
  work-around for log files created by external programs with the wrong
  user and/or group. Note that it was long said that this “functionality”
  would break once we go for serious privilege drop code, so hopefully
  nobody still depends on it (and, if so, they lost…).

• bugfix: pipes not opened in full priv mode when privs are to be dropped
• this begins a new devel branch for v5
• better handling of queue i/o errors in disk queues. This is kind of a
  bugfix, but a very intrusive one, this it goes into the devel version
  first. Right now, “file not found” is handled and leads to the new
  emergency mode, in which disk action is stopped and the queue run
  in direct mode. An error message is emited if this happens.

• added support for user-level PRI provided via systemd
• added new config directive $InputTCPFlowControl to select if tcp
  received messages shall be flagged as light delayable or not.

• enhanced omhdfs to support batching mode. This permits to increase
  performance, as we now call the HDFS API with much larger message
  sizes and far more infrequently

• bugfix: failover did not work correctly if repeated msg reduction was on
  affected directive was: $ActionExecOnlyWhenPreviousIsSuspended on
  closes: http://bugzilla.adiscon.com/show_bug.cgi?id=236