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Re: (ITS#8958) 2nd cn=config update blocks slapd while adding subordinate index

h.b.furuseth@usit.uio.no wrote:
> Full_Name: Hallvard Breien Furuseth
> Version: 2.4.47, master
> OS: Linux x86_64
> URL: ftp://ftp.openldap.org/incoming/Hallvard-Furuseth-190119.tgz
> Submission from: (NULL) (193.90.50.50)
> 
> 
> Use cn=config to add an index to a subordinate database,
> then make a 2nd cn=config change.  2nd change waits while
> (I assume) indexing, and blocks other slapd operations.
> So ldapwhoami during 2nd change takes 5 seconds.
> 
> To reproduce: ./bug.sh
> To debug, attach gdb in another terminal during 2nd MOD.
> gdb -q ../servers/slapd/slapd `cat slapd.pid`
> 
> trace.txt shows the 2nd config_back_modify() waiting
> in slap_pause_server().

This is not really surprising. Are you suggesting the indexing task should stop if another config mod comes in?

-- 
  -- Howard Chu
  CTO, Symas Corp.           http://www.symas.com
  Director, Highland Sun     http://highlandsun.com/hyc/
  Chief Architect, OpenLDAP  http://www.openldap.org/project/