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https://issues.apache.org/jira/browse/NIFI-6062?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Matt Burgess reassigned NIFI-6062:
----------------------------------
Assignee: Matt Burgess
> ExecuteSQLRecord does not write BLOB/CLOB data properly
> -------------------------------------------------------
>
> Key: NIFI-6062
> URL: https://issues.apache.org/jira/browse/NIFI-6062
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Reporter: Matt Burgess
> Assignee: Matt Burgess
> Priority: Major
>
> When using ExecuteSQLRecord (at least with an AvroRecordSetWriter) to return
> columns that contain BLOB/CLOB data, the following error is reported:
> org.apache.nifi.processor.exception.ProcessException: java.io.IOException:
> org.apache.nifi.serialization.record.util.IllegalTypeConversionException:
> Cannot convert value oracle.sql.BLOB@79c3c046 of type class oracle.sql.BLOB
> because no compatible types exist in the UNION for field IMAGE
> at
> org.apache.nifi.processors.standard.AbstractExecuteSQL.lambda$onTrigger$1(AbstractExecuteSQL.java:273)
> at
> org.apache.nifi.controller.repository.StandardProcessSession.write(StandardProcessSession.java:2663)
> at
> org.apache.nifi.processors.standard.AbstractExecuteSQL.onTrigger(AbstractExecuteSQL.java:269)
> at
> org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
> at
> org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1162)
> at
> org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:205)
> at
> org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117)
> at
> java.util.concurrent.Executors$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:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: java.io.IOException:
> org.apache.nifi.serialization.record.util.IllegalTypeConversionException:
> Cannot convert value oracle.sql.BLOB@79c3c046 of type class oracle.sql.BLOB
> because no compatible types exist in the UNION for field IMAGE
> at
> org.apache.nifi.processors.standard.sql.RecordSqlWriter.writeResultSet(RecordSqlWriter.java:85)
> at
> org.apache.nifi.processors.standard.AbstractExecuteSQL.lambda$onTrigger$1(AbstractExecuteSQL.java:271)
> ... 13 common frames omitted
> Caused by:
> org.apache.nifi.serialization.record.util.IllegalTypeConversionException:
> Cannot convert value oracle.sql.BLOB@79c3c046 of type class oracle.sql.BLOB
> because no compatible types exist in the UNION for field IMAGE
> at
> org.apache.nifi.avro.AvroTypeUtil.convertUnionFieldValue(AvroTypeUtil.java:897)
> at
> org.apache.nifi.avro.AvroTypeUtil.convertToAvroObject(AvroTypeUtil.java:783)
> at
> org.apache.nifi.avro.AvroTypeUtil.createAvroRecord(AvroTypeUtil.java:578)
> at
> org.apache.nifi.avro.AvroTypeUtil.createAvroRecord(AvroTypeUtil.java:561)
> at
> org.apache.nifi.avro.WriteAvroResultWithSchema.writeRecord(WriteAvroResultWithSchema.java:60)
> at
> org.apache.nifi.serialization.AbstractRecordSetWriter.write(AbstractRecordSetWriter.java:59)
> at
> org.apache.nifi.serialization.AbstractRecordSetWriter.write(AbstractRecordSetWriter.java:52)
> at
> org.apache.nifi.processors.standard.sql.RecordSqlWriter.writeResultSet(RecordSqlWriter.java:79)
> ... 14 common frames omitted
> ExecuteSQL does not have this problem as it uses JdbcCommon which has custom
> BLOB/CLOB logic, where ExecuteSQLRecord uses AvroTypeUtil which does not
> catch BLOB/CLOB as a special case. The logic should be updated to match
> JdbcCommon for BLOB/CLOB handling.
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