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https://issues.apache.org/jira/browse/NIFI-4726?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16317665#comment-16317665
]
ASF GitHub Bot commented on NIFI-4726:
--------------------------------------
Github user joewitt commented on a diff in the pull request:
https://github.com/apache/nifi/pull/2363#discussion_r160315696
--- Diff:
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/util/JsonUtilsPool.java
---
@@ -0,0 +1,87 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.nifi.processors.standard.util;
+
+import com.bazaarvoice.jolt.JsonUtil;
+import com.bazaarvoice.jolt.JsonUtilImpl;
+import org.apache.commons.pool.PoolableObjectFactory;
+import org.apache.commons.pool.impl.GenericObjectPool;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class JsonUtilsPool {
+ private final static Logger LOG =
LoggerFactory.getLogger(JsonUtilsPool.class);
+ static private GenericObjectPool pool;
--- End diff --
dont believe we would want a static pool instance. We can just make the
pool a member of the processor.
> Concurrency issue with JoltTransformJson
> ----------------------------------------
>
> Key: NIFI-4726
> URL: https://issues.apache.org/jira/browse/NIFI-4726
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Marco Gaido
> Assignee: Marco Gaido
> Fix For: 1.5.0
>
>
> JoltTransformJson uses under the hood Jackson to parse JSONs. On heavy
> multithreading workloads, Jackson can have concurrency problem, as also
> described in this Stackoverflow thread
> https://stackoverflow.com/questions/17924865/jsonmappingexception-was-java-lang-arrayindexoutofboundsexception.
> This can cause all the parsing to fail when this problem occurs.
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