question: protected void syncFlushVdcConfigToLocal ( ) throws Exception { if ( vdcPropBarrier == null ) { vdcPropBarrier = new VdcPropertyBarrier ( targetSiteInfo , VDC_OP_BARRIER_TIMEOUT ) ; } vdcPropBarrier . enter ( ) ; try { flushVdcConfigToLocal ( ) ; } finally { boolean allLeft = vdcPropBarrier . leave ( ) ; if ( ! allLeft ) { log . info ( "wait 1 minute, so all nodes be able to return from leave()" ) ; Thread . sleep ( IPSEC_RESTART_DELAY ) ; } } vdcPropBarrier = null ; }
target:  Simulaneously flush vdc config on all nodes in current site. via barrier