Details, including the configuration variables, are covered at the following
wiki page:
+
\url{http://egee.cesnet.cz/mediawiki/index.php/LB_purge_and_export_to_JP}.
+\paragraph{Persistent Information on Purged Jobs (``Zombies'')}
+
+Since \LB version 2.0, the JobID of a purged job is not fully discarded but stored in a separate table. A query for the status of such job returns \emph{Identifier removed}.\footnote{As of \LB\,3.0. In 2.0 and 2.1 releases an empty job status structure was returned with job state set to \emph{purged}.} There are two purposes to this arrangement:
+
+\begin{enumerate}
+\item Confirming that the job existed and that its details have been exported to Job Provenance (if deployed and configured),
+\item Preventing reuse of the JobID in case of flag \code{EDG\_WLL\_LOGLFLAG\_EXCL} set on registration.
+\end{enumerate}
+
\subsubsection{On-line monitoring and statistics}
\label{maintain:statistics}
% purge -- data z~\LB\ zmizí
\LB is not a~permanent job data storage. The data get purged from the
server on timeout, unrelated to any user's action.
-Therefore, the \LB query may return ``no such job'' error message (or not
+Therefore, the \LB query may return ``Identifier removed'' error message (or not
include the job in a list of retrieved jobs) even if the same previous
-\LB query had no such problems.
+\LB query behaved differently.
\end{itemize}
\textbf{The following versions of \LB service are covered by these documents:}
\begin{itemize}
-\item \LBver{2.2}: in development, available through CVS only,
+\item \LBver{3.0}: included in the EMI-1 Kebnekaise release
\item \LBver{2.1}: replacement for \LBver{2.0} in gLite 3.2,
\item \LBver{2.0}: current stable version, in production as part of gLite 3.2,
\item \LBver{1.x}: old stable version, in production as part of gLite 3.1.