Marcio Sugar created NIFI-4926:
----------------------------------
Summary: QueryDatabaseTable throws SqlException after reading
entire DB2 table
Key: NIFI-4926
URL: https://issues.apache.org/jira/browse/NIFI-4926
Project: Apache NiFi
Issue Type: Bug
Components: Extensions
Affects Versions: 1.5.0
Environment: ubuntu 16.04
nifi 1.5.0
db2 v10.5.0.7
JDBC driver db2jcc4-10.5.0.6
Reporter: Marcio Sugar
I'm trying to replicate a table from one database to another using NiFi. My
flow is just a QueryDatabaseTable connected to a PutDatabaseRecord. The former
fails with this SQLException after reading the whole table:
{code:java}
2018-03-02 15:20:44,688 INFO [NiFi Web Server-2017]
o.a.n.c.s.StandardProcessScheduler Starting
QueryDatabaseTable[id=e83d9370-0161-1000-d7d6-702ae791aaf1]
2018-03-02 15:20:44,692 INFO [StandardProcessScheduler Thread-2]
o.a.n.c.s.TimerDrivenSchedulingAgent Scheduled
QueryDatabaseTable[id=e83d9370-0161-1000-d7d6-702ae791aaf1] to run with 1
threads
2018-03-02 15:20:44,692 DEBUG [Timer-Driven Process Thread-2]
o.a.n.p.standard.QueryDatabaseTable
QueryDatabaseTable[id=e83d9370-0161-1000-d7d6-702ae791aaf1] Returning CLUSTER
State: StandardStateMap[version=54, values={}]
2018-03-02 15:20:44,693 DEBUG [Timer-Driven Process Thread-2]
o.a.n.p.standard.QueryDatabaseTable
QueryDatabaseTable[id=e83d9370-0161-1000-d7d6-702ae791aaf1] Executing query
SELECT * FROM FXSCHEMA.USER
2018-03-02 15:20:45,159 INFO [Flow Service Tasks Thread-1]
o.a.nifi.controller.StandardFlowService Saved flow controller
org.apache.nifi.controller.FlowController@77b729c4 // Another save pending =
false
2018-03-02 15:21:41,577 INFO [Timer-Driven Process Thread-2]
o.a.n.p.standard.QueryDatabaseTable
QueryDatabaseTable[id=e83d9370-0161-1000-d7d6-702ae791aaf1]
StandardFlowFileRecord[uuid=fc5e66c0-14ef-4ed5-8d84-7c4d582000b7,claim=StandardContentClaim
[resourceClaim=StandardResourceClaim[id=1520022044698-4, container=default,
section=4], offset=0,
length=222061615],offset=0,name=264583001281149,size=222061615] contains 652026
Avro records; transferring to 'success'
2018-03-02 15:21:41,578 ERROR [Timer-Driven Process Thread-2]
o.a.n.p.standard.QueryDatabaseTable
QueryDatabaseTable[id=e83d9370-0161-1000-d7d6-702ae791aaf1] Unable to execute
SQL select query SELECT * FROM FXSCHEMA.USER due to
org.apache.nifi.processor.exception.ProcessException: Error during database
query or conversion of records to Avro.: {}
org.apache.nifi.processor.exception.ProcessException: Error during database
query or conversion of records to Avro.
at
org.apache.nifi.processors.standard.QueryDatabaseTable.lambda$onTrigger$0(QueryDatabaseTable.java:291)
at
org.apache.nifi.controller.repository.StandardProcessSession.write(StandardProcessSession.java:2571)
at
org.apache.nifi.processors.standard.QueryDatabaseTable.onTrigger(QueryDatabaseTable.java:285)
at
org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1122)
at
org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:147)
at
org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47)
at
org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:128)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
Caused by: com.ibm.db2.jcc.am.SqlException: [jcc][t4][10120][10898][4.19.26]
Invalid operation: result set is closed. ERRORCODE=-4470, SQLSTATE=null
at com.ibm.db2.jcc.am.kd.a(Unknown Source)
at com.ibm.db2.jcc.am.kd.a(Unknown Source)
at com.ibm.db2.jcc.am.kd.a(Unknown Source)
at com.ibm.db2.jcc.am.ResultSet.checkForClosedResultSet(Unknown Source)
at com.ibm.db2.jcc.am.ResultSet.getMetaDataX(Unknown Source)
at com.ibm.db2.jcc.am.ResultSet.getMetaData(Unknown Source)
at
org.apache.commons.dbcp.DelegatingResultSet.getMetaData(DelegatingResultSet.java:322)
at
org.apache.commons.dbcp.DelegatingResultSet.getMetaData(DelegatingResultSet.java:322)
at
org.apache.nifi.processors.standard.util.JdbcCommon.createSchema(JdbcCommon.java:452)
at
org.apache.nifi.processors.standard.util.JdbcCommon.convertToAvroStream(JdbcCommon.java:256)
at
org.apache.nifi.processors.standard.QueryDatabaseTable.lambda$onTrigger$0(QueryDatabaseTable.java:289)
... 13 common frames omitted
{code}
According to [DB2's
documentation|http://www-01.ibm.com/support/docview.wss?uid=swg21461670], this
particular exception could be avoided by adding this setting (semicolon
included) to the JDBC connection URL:
{code:java}
allowNextOnExhaustedResultSet=1;{code}
But it didn't make a difference.
I also tried to set the 'Fetch Size' and 'Max Rows Per Flow File' to different
values to no avail.
Setting the 'Additional WHERE clause' to get just a small number of rows didn't
help either.
It looks like the connection is been prematurely closed by the processor.
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