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https://issues.apache.org/jira/browse/NIFI-4105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16067969#comment-16067969
]
ASF GitHub Bot commented on NIFI-4105:
--------------------------------------
Github user pvillard31 commented on a diff in the pull request:
https://github.com/apache/nifi/pull/1937#discussion_r124734510
--- Diff:
nifi-nar-bundles/nifi-cassandra-bundle/nifi-cassandra-processors/src/main/java/org/apache/nifi/processors/cassandra/QueryCassandra.java
---
@@ -213,13 +308,20 @@ public void onTrigger(final ProcessContext context,
final ProcessSession session
return;
}
}
-
- final ComponentLog logger = getLogger();
final String selectQuery =
context.getProperty(CQL_SELECT_QUERY).evaluateAttributeExpressions(fileToProcess).getValue();
final long queryTimeout =
context.getProperty(QUERY_TIMEOUT).evaluateAttributeExpressions(fileToProcess).asTimePeriod(TimeUnit.MILLISECONDS);
final String outputFormat =
context.getProperty(OUTPUT_FORMAT).getValue();
final Charset charset =
Charset.forName(context.getProperty(CHARSET).evaluateAttributeExpressions(fileToProcess).getValue());
final StopWatch stopWatch = new StopWatch(true);
+ final String waterMarkDateField =
context.getProperty(DATE_FIELD).getValue();
+ final String tableName =
context.getProperty(TABLE_NAME).getValue();
+ final String keySpace =
context.getProperty(KEYSPACE).evaluateAttributeExpressions(fileToProcess).getValue();
+
+ if ( StringUtils.isEmpty(selectQuery) &&
StringUtils.isEmpty(tableName) ) {
--- End diff --
I think this should be evaluated in customValidate() method instead of
onTrigger().
> support the specified Maximum value column and CSV Stream for Cassandra
> -----------------------------------------------------------------------
>
> Key: NIFI-4105
> URL: https://issues.apache.org/jira/browse/NIFI-4105
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Extensions
> Affects Versions: 1.3.0
> Reporter: Yoonwon Ko
>
> I'm trying to find a CassandraProcessor to fetch rows whose values in the
> specified Maximum Value columns are larger than the previously-seen maximum
> like QueryDatabaseTable.
> But I found only QueryCassandra. It just executes same CQL everytime without
> keeping maximum value.
> and I think we also need convertToCsvStream option.
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