The limit is applied in the method that calls
noteTransformationConnectionRegistration.
Here it is:
>>>>>>
/** Note the registration of a transformation connector used by the
specified connections.
* This method will be called when a connector is registered, on which the
specified
* connections depend.
*@param connectionNames is the set of connection names.
*/
@Override
public void noteTransformationConnectorRegistration(String[]
connectionNames)
throws ManifoldCFException
{
// For each connection, find the corresponding list of jobs. From
these jobs, we want the job id and the status.
List<String> list = new ArrayList<String>();
int maxCount = database.findConjunctionClauseMax(new
ClauseDescription[]{});
int currentCount = 0;
int i = 0;
while (i < connectionNames.length)
{
if (currentCount == maxCount)
{
noteTransformationConnectionRegistration(list);
list.clear();
currentCount = 0;
}
list.add(connectionNames[i++]);
currentCount++;
}
if (currentCount > 0)
noteTransformationConnectionRegistration(list);
}
<<<<<<
It looks correct now. Do you see an issue with it?
Karl
On Mon, Jul 30, 2018 at 3:28 PM Mike Hugo <m...@piragua.com> wrote:
> Nice catch Karl!
>
> I applied that patch, but I'm still getting the same error.
>
> I think the problem is in JobManager.noteTransformationConnectionRe
> gistration
>
> If jobs.findJobsMatchingTransformations(list); returns a large list of
> ids (like it is doing in our case - 39,941 ids ), the generated query
> string still has a large OR clause in it. I don't see getMaxOrClause
> applied to the query being built inside noteTransformationConnectionRe
> gistration
>
> >>>>>>
> protected void noteTransformationConnectionRegistration(List<String> list)
> throws ManifoldCFException
> {
> // Query for the matching jobs, and then for each job potentially
> adjust the state
> Long[] jobIDs = jobs.findJobsMatchingTransformations(list);
> if (jobIDs.length == 0)
> return;
>
> StringBuilder query = new StringBuilder();
> ArrayList newList = new ArrayList();
>
> query.append("SELECT
> ").append(jobs.idField).append(",").append(jobs.statusField)
> .append(" FROM ").append(jobs.getTableName()).append(" WHERE ")
> * .append(database.buildConjunctionClause(newList,new
> ClauseDescription[]{*
> * new MultiClause(jobs.idField,jobIDs)}))*
> .append(" FOR UPDATE");
> IResultSet set =
> database.performQuery(query.toString(),newList,null,null);
> int i = 0;
> while (i < set.getRowCount())
> {
> IResultRow row = set.getRow(i++);
> Long jobID = (Long)row.getValue(jobs.idField);
> int statusValue =
> jobs.stringToStatus((String)row.getValue(jobs.statusField));
> jobs.noteTransformationConnectorRegistration(jobID,statusValue);
> }
> }
> <<<<<<
>
>
> On Mon, Jul 30, 2018 at 1:55 PM, Karl Wright <daddy...@gmail.com> wrote:
>
>> The Postgresql driver supposedly limits this to 25 clauses at a pop:
>>
>> >>>>>>
>> @Override
>> public int getMaxOrClause()
>> {
>> return 25;
>> }
>>
>> /* Calculate the number of values a particular clause can have, given
>> the values for all the other clauses.
>> * For example, if in the expression x AND y AND z, x has 2 values and z
>> has 1, find out how many values x can legally have
>> * when using the buildConjunctionClause() method below.
>> */
>> @Override
>> public int findConjunctionClauseMax(ClauseDescription[]
>> otherClauseDescriptions)
>> {
>> // This implementation uses "OR"
>> return getMaxOrClause();
>> }
>> <<<<<<
>>
>> The problem is that there was a cut-and-paste error, with just
>> transformation connections, that defeated the limit. I'll create a ticket
>> and attach a patch. CONNECTORS-1520.
>>
>> Karl
>>
>>
>>
>>
>>
>> On Mon, Jul 30, 2018 at 2:29 PM Karl Wright <daddy...@gmail.com> wrote:
>>
>>> Hi Mike,
>>>
>>> This might be the issue indeed. I'll look into it.
>>>
>>> Karl
>>>
>>>
>>> On Mon, Jul 30, 2018 at 2:26 PM Mike Hugo <m...@piragua.com> wrote:
>>>
>>>> I'm not sure what the solution is yet, but I think I may have found the
>>>> culprit:
>>>>
>>>> JobManager.noteTransformationConnectionRegistration(List<String> list)
>>>> is creating a pretty big query:
>>>>
>>>> SELECT id,status FROM jobs WHERE (id=? OR id=? OR id=? OR id=?
>>>> ........ OR id=?) FOR UPDATE
>>>>
>>>> replace the elipsis with as list of 39,941 ids (it's a huge query when
>>>> it prints out)
>>>>
>>>> It seems that the database doesn't like that query and closes the
>>>> connection before returning with a response.
>>>>
>>>> As I mentioned this instance of manifold has nearly 40,000 web
>>>> crawlers. is that a high number for Manifold to handle?
>>>>
>>>> On Mon, Jul 30, 2018 at 10:58 AM, Karl Wright <daddy...@gmail.com>
>>>> wrote:
>>>>
>>>>> Well, I have absolutely no idea what is wrong and I've never seen
>>>>> anything like that before. But postgres is complaining because the
>>>>> communication with the JDBC client is being interrupted by something.
>>>>>
>>>>> Karl
>>>>>
>>>>>
>>>>> On Mon, Jul 30, 2018 at 10:39 AM Mike Hugo <m...@piragua.com> wrote:
>>>>>
>>>>>> No, and manifold and postgres run on the same host.
>>>>>>
>>>>>> On Mon, Jul 30, 2018 at 9:35 AM, Karl Wright <daddy...@gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> ' LOG: incomplete message from client'
>>>>>>>
>>>>>>> This shows a network issue. Did your network configuration change
>>>>>>> recently?
>>>>>>>
>>>>>>> Karl
>>>>>>>
>>>>>>>
>>>>>>> On Mon, Jul 30, 2018 at 9:59 AM Mike Hugo <m...@piragua.com> wrote:
>>>>>>>
>>>>>>>> Tried a postgres vacuum and also a restart, but the problem
>>>>>>>> persists. Here's the log again with some additional logging details
>>>>>>>> added
>>>>>>>> (below)
>>>>>>>>
>>>>>>>> I tried running the last query from the logs against the database
>>>>>>>> and it works fine - I modified it to return a count and that also
>>>>>>>> works.
>>>>>>>>
>>>>>>>> SELECT count(*) FROM jobs t1 WHERE EXISTS(SELECT 'x' FROM
>>>>>>>> jobpipelines WHERE t1.id=ownerid AND transformationname='Tika');
>>>>>>>> count
>>>>>>>> -------
>>>>>>>> 39941
>>>>>>>> (1 row)
>>>>>>>>
>>>>>>>>
>>>>>>>> Is 39k jobs a high number? I've run some other instances of
>>>>>>>> Manifold with more like 1,000 jobs and those seem to be working fine.
>>>>>>>> That's the only thing I can think of that's different between this
>>>>>>>> instance
>>>>>>>> that won't start and the others. Any ideas?
>>>>>>>>
>>>>>>>> Thanks for your help!
>>>>>>>>
>>>>>>>> Mike
>>>>>>>>
>>>>>>>> LOG: duration: 0.079 ms parse <unnamed>: SELECT connectionname
>>>>>>>> FROM transformationconnections WHERE classname=$1
>>>>>>>> LOG: duration: 0.079 ms bind <unnamed>: SELECT connectionname
>>>>>>>> FROM transformationconnections WHERE classname=$1
>>>>>>>> DETAIL: parameters: $1 =
>>>>>>>> 'org.apache.manifoldcf.agents.transformation.tika.TikaExtractor'
>>>>>>>> LOG: duration: 0.017 ms execute <unnamed>: SELECT connectionname
>>>>>>>> FROM transformationconnections WHERE classname=$1
>>>>>>>> DETAIL: parameters: $1 =
>>>>>>>> 'org.apache.manifoldcf.agents.transformation.tika.TikaExtractor'
>>>>>>>> LOG: duration: 0.039 ms parse <unnamed>: SELECT * FROM agents
>>>>>>>> LOG: duration: 0.040 ms bind <unnamed>: SELECT * FROM agents
>>>>>>>> LOG: duration: 0.010 ms execute <unnamed>: SELECT * FROM agents
>>>>>>>> LOG: duration: 0.084 ms parse <unnamed>: SELECT id FROM jobs t1
>>>>>>>> WHERE EXISTS(SELECT 'x' FROM jobpipelines WHERE t1.id=ownerid AND
>>>>>>>> transformationname=$1)
>>>>>>>> LOG: duration: 0.359 ms bind <unnamed>: SELECT id FROM jobs t1
>>>>>>>> WHERE EXISTS(SELECT 'x' FROM jobpipelines WHERE t1.id=ownerid AND
>>>>>>>> transformationname=$1)
>>>>>>>> DETAIL: parameters: $1 = 'Tika'
>>>>>>>> LOG: duration: 77.622 ms execute <unnamed>: SELECT id FROM jobs
>>>>>>>> t1 WHERE EXISTS(SELECT 'x' FROM jobpipelines WHERE t1.id=ownerid
>>>>>>>> AND transformationname=$1)
>>>>>>>> DETAIL: parameters: $1 = 'Tika'
>>>>>>>> LOG: incomplete message from client
>>>>>>>> LOG: disconnection: session time: 0:00:06.574 user=REMOVED
>>>>>>>> database=REMOVED host=127.0.0.1 port=45356
>>>>>>>> >2018-07-30 12:36:09,415 [main] ERROR org.apache.manifoldcf.root -
>>>>>>>> Exception: This connection has been closed.
>>>>>>>> org.apache.manifoldcf.core.interfaces.ManifoldCFException: This
>>>>>>>> connection has been closed.
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.reinterpretException(DBInterfacePostgreSQL.java:627)
>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.rollbackCurrentTransaction(DBInterfacePostgreSQL.java:1296)
>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.Database.endTransaction(Database.java:368)
>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.endTransaction(DBInterfacePostgreSQL.java:1236)
>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.crawler.system.ManifoldCF.registerConnectors(ManifoldCF.java:605)
>>>>>>>> ~[mcf-pull-agent.jar:?]
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.crawler.system.ManifoldCF.reregisterAllConnectors(ManifoldCF.java:160)
>>>>>>>> ~[mcf-pull-agent.jar:?]
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.jettyrunner.ManifoldCFJettyRunner.main(ManifoldCFJettyRunner.java:239)
>>>>>>>> [mcf-jetty-runner.jar:?]
>>>>>>>> Caused by: org.postgresql.util.PSQLException: This connection has
>>>>>>>> been closed.
>>>>>>>> at
>>>>>>>> org.postgresql.jdbc.PgConnection.checkClosed(PgConnection.java:766)
>>>>>>>> ~[postgresql-42.1.3.jar:42.1.3]
>>>>>>>> at
>>>>>>>> org.postgresql.jdbc.PgConnection.createStatement(PgConnection.java:1576)
>>>>>>>> ~[postgresql-42.1.3.jar:42.1.3]
>>>>>>>> at
>>>>>>>> org.postgresql.jdbc.PgConnection.createStatement(PgConnection.java:367)
>>>>>>>> ~[postgresql-42.1.3.jar:42.1.3]
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.Database.execute(Database.java:873)
>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.Database$ExecuteQueryThread.run(Database.java:696)
>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>> org.apache.manifoldcf.core.interfaces.ManifoldCFException: This
>>>>>>>> connection has been closed.
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.reinterpretException(DBInterfacePostgreSQL.java:627)
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.rollbackCurrentTransaction(DBInterfacePostgreSQL.java:1296)
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.Database.endTransaction(Database.java:368)
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.endTransaction(DBInterfacePostgreSQL.java:1236)
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.crawler.system.ManifoldCF.registerConnectors(ManifoldCF.java:605)
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.crawler.system.ManifoldCF.reregisterAllConnectors(ManifoldCF.java:160)
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.jettyrunner.ManifoldCFJettyRunner.main(ManifoldCFJettyRunner.java:239)
>>>>>>>> Caused by: org.postgresql.util.PSQLException: This connection has
>>>>>>>> been closed.
>>>>>>>> at
>>>>>>>> org.postgresql.jdbc.PgConnection.checkClosed(PgConnection.java:766)
>>>>>>>> at
>>>>>>>> org.postgresql.jdbc.PgConnection.createStatement(PgConnection.java:1576)
>>>>>>>> at
>>>>>>>> org.postgresql.jdbc.PgConnection.createStatement(PgConnection.java:367)
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.Database.execute(Database.java:873)
>>>>>>>> at
>>>>>>>> org.apache.manifoldcf.core.database.Database$ExecuteQueryThread.run(Database.java:696)
>>>>>>>> LOG: disconnection: session time: 0:00:10.677 user=postgres
>>>>>>>> database=template1 host=127.0.0.1 port=45354
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Sun, Jul 29, 2018 at 8:09 AM, Karl Wright <daddy...@gmail.com>
>>>>>>>> wrote:
>>>>>>>>
>>>>>>>>> It looks to me like your database server is not happy. Maybe it's
>>>>>>>>> out of resources? Not sure but a restart may be in order.
>>>>>>>>>
>>>>>>>>> Karl
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Sun, Jul 29, 2018 at 9:06 AM Mike Hugo <m...@piragua.com>
>>>>>>>>> wrote:
>>>>>>>>>
>>>>>>>>>> Recently we started seeing this error when Manifold CF starts
>>>>>>>>>> up. We had been running Manifold CF with many web connectors and a
>>>>>>>>>> few RSS
>>>>>>>>>> feeds for a while and it had been working fine. The server got
>>>>>>>>>> rebooted
>>>>>>>>>> and since then we started seeing this error. I'm not sure exactly
>>>>>>>>>> what
>>>>>>>>>> changed. Any ideas as to where to start looking and how to fix this?
>>>>>>>>>>
>>>>>>>>>> Thanks!
>>>>>>>>>>
>>>>>>>>>> Mike
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> Initial repository connections already created.
>>>>>>>>>> Configuration file successfully read
>>>>>>>>>> Successfully unregistered all domains
>>>>>>>>>> Successfully unregistered all output connectors
>>>>>>>>>> Successfully unregistered all transformation connectors
>>>>>>>>>> Successfully unregistered all mapping connectors
>>>>>>>>>> Successfully unregistered all authority connectors
>>>>>>>>>> Successfully unregistered all repository connectors
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> WARNING: there is no transaction in progress
>>>>>>>>>> Successfully registered output connector
>>>>>>>>>> 'org.apache.manifoldcf.agents.output.solr.SolrConnector'
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> WARNING: there is no transaction in progress
>>>>>>>>>> Successfully registered output connector
>>>>>>>>>> 'org.apache.manifoldcf.agents.output.searchblox.SearchBloxConnector'
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> WARNING: there is no transaction in progress
>>>>>>>>>> Successfully registered output connector
>>>>>>>>>> 'org.apache.manifoldcf.agents.output.opensearchserver.OpenSearchServerConnector'
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> WARNING: there is no transaction in progress
>>>>>>>>>> Successfully registered output connector
>>>>>>>>>> 'org.apache.manifoldcf.agents.output.nullconnector.NullConnector'
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> WARNING: there is no transaction in progress
>>>>>>>>>> Successfully registered output connector
>>>>>>>>>> 'org.apache.manifoldcf.agents.output.kafka.KafkaOutputConnector'
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> WARNING: there is no transaction in progress
>>>>>>>>>> Successfully registered output connector
>>>>>>>>>> 'org.apache.manifoldcf.agents.output.hdfs.HDFSOutputConnector'
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> WARNING: there is no transaction in progress
>>>>>>>>>> Successfully registered output connector
>>>>>>>>>> 'org.apache.manifoldcf.agents.output.gts.GTSConnector'
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> WARNING: there is no transaction in progress
>>>>>>>>>> Successfully registered output connector
>>>>>>>>>> 'org.apache.manifoldcf.agents.output.filesystem.FileOutputConnector'
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> WARNING: there is no transaction in progress
>>>>>>>>>> Successfully registered output connector
>>>>>>>>>> 'org.apache.manifoldcf.agents.output.elasticsearch.ElasticSearchConnector'
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> WARNING: there is no transaction in progress
>>>>>>>>>> Successfully registered output connector
>>>>>>>>>> 'org.apache.manifoldcf.agents.output.amazoncloudsearch.AmazonCloudSearchConnector'
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> WARNING: there is no transaction in progress
>>>>>>>>>> Successfully registered transformation connector
>>>>>>>>>> 'org.apache.manifoldcf.agents.transformation.tikaservice.TikaExtractor'
>>>>>>>>>> WARNING: there is already a transaction in progress
>>>>>>>>>> LOG: incomplete message from client
>>>>>>>>>> >2018-07-29 13:02:06,659 [main] ERROR org.apache.manifoldcf.root
>>>>>>>>>> - Exception: This connection has been closed.
>>>>>>>>>> org.apache.manifoldcf.core.interfaces.ManifoldCFException: This
>>>>>>>>>> connection has been closed.
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.reinterpretException(DBInterfacePostgreSQL.java:627)
>>>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.rollbackCurrentTransaction(DBInterfacePostgreSQL.java:1296)
>>>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.Database.endTransaction(Database.java:368)
>>>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.endTransaction(DBInterfacePostgreSQL.java:1236)
>>>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.crawler.system.ManifoldCF.registerConnectors(ManifoldCF.java:605)
>>>>>>>>>> ~[mcf-pull-agent.jar:?]
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.crawler.system.ManifoldCF.reregisterAllConnectors(ManifoldCF.java:160)
>>>>>>>>>> ~[mcf-pull-agent.jar:?]
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.jettyrunner.ManifoldCFJettyRunner.main(ManifoldCFJettyRunner.java:239)
>>>>>>>>>> [mcf-jetty-runner.jar:?]
>>>>>>>>>> Caused by: org.postgresql.util.PSQLException: This connection has
>>>>>>>>>> been closed.
>>>>>>>>>> at
>>>>>>>>>> org.postgresql.jdbc.PgConnection.checkClosed(PgConnection.java:766)
>>>>>>>>>> ~[postgresql-42.1.3.jar:42.1.3]
>>>>>>>>>> at
>>>>>>>>>> org.postgresql.jdbc.PgConnection.createStatement(PgConnection.java:1576)
>>>>>>>>>> ~[postgresql-42.1.3.jar:42.1.3]
>>>>>>>>>> at
>>>>>>>>>> org.postgresql.jdbc.PgConnection.createStatement(PgConnection.java:367)
>>>>>>>>>> ~[postgresql-42.1.3.jar:42.1.3]
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.Database.execute(Database.java:873)
>>>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.Database$ExecuteQueryThread.run(Database.java:696)
>>>>>>>>>> ~[mcf-core.jar:?]
>>>>>>>>>> org.apache.manifoldcf.core.interfaces.ManifoldCFException: This
>>>>>>>>>> connection has been closed.
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.reinterpretException(DBInterfacePostgreSQL.java:627)
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.rollbackCurrentTransaction(DBInterfacePostgreSQL.java:1296)
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.Database.endTransaction(Database.java:368)
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.endTransaction(DBInterfacePostgreSQL.java:1236)
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.crawler.system.ManifoldCF.registerConnectors(ManifoldCF.java:605)
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.crawler.system.ManifoldCF.reregisterAllConnectors(ManifoldCF.java:160)
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.jettyrunner.ManifoldCFJettyRunner.main(ManifoldCFJettyRunner.java:239)
>>>>>>>>>> Caused by: org.postgresql.util.PSQLException: This connection has
>>>>>>>>>> been closed.
>>>>>>>>>> at
>>>>>>>>>> org.postgresql.jdbc.PgConnection.checkClosed(PgConnection.java:766)
>>>>>>>>>> at
>>>>>>>>>> org.postgresql.jdbc.PgConnection.createStatement(PgConnection.java:1576)
>>>>>>>>>> at
>>>>>>>>>> org.postgresql.jdbc.PgConnection.createStatement(PgConnection.java:367)
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.Database.execute(Database.java:873)
>>>>>>>>>> at
>>>>>>>>>> org.apache.manifoldcf.core.database.Database$ExecuteQueryThread.run(Database.java:696)
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>
>>>>>>
>>>>
>
