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Message: #07503

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[EP-tech] duplicate key value violates unique constraint "event_queue_pkey"

Hi

We have installed the latest ePrints 3.4 with Postgresql 9.4  , adding a new item to the repository works fine but we are receiving this error continuously in the logs:

ERROR:  duplicate key value violates unique constraint "event_queue_pkey"
DETAIL:  Key (eventqueueid)=(e9210339587b3507d2bdafc95a238a39) already exists. at /opt/eprints3/perl_lib/EPrints/Database.pm line 1387.
	EPrints::Database::add_record('EPrints::Database::Pg=HASH(0x55aa5922a478)', 'EPrints::DataSet=HASH(0x55aa57023030)', 'HASH(0x55aa592f77c8)') called at /opt/eprints3/perl_lib/EPrints/DataObj.pm line 294
	EPrints::DataObj::create_from_data('EPrints::DataObj::EventQueue', 'EPrints::Repository=HASH(0x55aa55a83468)', 'HASH(0x55aa592f72d0)', 'EPrints::DataSet=HASH(0x55aa57023030)') called at /opt/eprints3/perl_lib/EPrints/DataObj/EventQueue.pm line 109
	EPrints::DataObj::EventQueue::create_unique('EPrints::DataObj::EventQueue', 'EPrints::Repository=HASH(0x55aa55a83468)', 'HASH(0x55aa592f72d0)') called at /opt/eprints3/perl_lib/EPrints/DataObj/EPrint.pm line 534
	EPrints::DataObj::EPrint::update_triggers('EPrints::DataObj::EPrint=HASH(0x55aa59246210)') called at /opt/eprints3/perl_lib/EPrints/DataObj/EPrint.pm line 1013
	EPrints::DataObj::EPrint::commit('EPrints::DataObj::EPrint=HASH(0x55aa59246210)') called at /opt/eprints3/perl_lib/EPrints/Workflow/Stage.pm line 221
	EPrints::Workflow::Stage::update_from_form('EPrints::Workflow::Stage=HASH(0x55aa5926a530)', 'EPrints::ScreenProcessor=HASH(0x55aa5922e510)') called at /opt/eprints3/perl_lib/EPrints/Workflow.pm line 401
	EPrints::Workflow::update_from_form('EPrints::Workflow=HASH(0x55aa592ee8e8)', 'EPrints::ScreenProcessor=HASH(0x55aa5922e510)') called at /opt/eprints3/perl_lib/EPrints/Plugin/Screen/EPrint/Edit.pm line 189
	EPrints::Plugin::Screen::EPrint::Edit::action_next('EPrints::Plugin::Screen::EPrint::Edit=HASH(0x55aa5914bc58)') called at /opt/eprints3/perl_lib/EPrints/Plugin/Screen.pm line 240
	EPrints::Plugin::Screen::from('EPrints::Plugin::Screen::EPrint::Edit=HASH(0x55aa5914bc58)') called at /opt/eprints3/perl_lib/EPrints/Plugin/Screen/EPrint/Edit.pm line 117
	EPrints::Plugin::Screen::EPrint::Edit::from('EPrints::Plugin::Screen::EPrint::Edit=HASH(0x55aa5914bc58)') called at /opt/eprints3/perl_lib/EPrints/ScreenProcessor.pm line 316
	EPrints::ScreenProcessor::process('EPrints::ScreenProcessor', 'session', 'EPrints::Repository=HASH(0x55aa55a83468)', 'template', undef, 'url', '/cgi/users/home') called at /opt/eprints3/cgi/users/home line 25
	ModPerl::ROOT::ModPerl::Registry::opt_eprints3_cgi_users_home::handler('Apache2::RequestRec=SCALAR(0x55aa5445a690)') called at /usr/lib64/perl5/vendor_perl/ModPerl/RegistryCooker.pm line 207
	eval {...} called at /usr/lib64/perl5/vendor_perl/ModPerl/RegistryCooker.pm line 207
	ModPerl::RegistryCooker::run('ModPerl::Registry=HASH(0x55aa592206f8)') called at /usr/lib64/perl5/vendor_perl/ModPerl/RegistryCooker.pm line 173
	ModPerl::RegistryCooker::default_handler('ModPerl::Registry=HASH(0x55aa592206f8)') called at /usr/lib64/perl5/vendor_perl/ModPerl/Registry.pm line 32
	ModPerl::Registry::handler('ModPerl::Registry', 'Apache2::RequestRec=SCALAR(0x55aa5445a690)') called at -e line 0
	eval {...} called at -e line 0

doing a query in the "event_queue" with the same (eventqueueid)=(e9210339587b3507d2bdafc95a238a39) shows that the pluginid is "Event::RDF" and is "waiting".  It seems other events for some reason are trying to use the same (eventqueueid)=(e9210339587b3507d2bdafc95a238a39) which results in the "ERROR:  duplicate key value violates unique constraint "event_queue_pkey"

Thank you for your suggestions to solve this issue.

Thanks