java.lang.NullPointerException

Spring JIRA | Ilayaperumal Gopinathan | 2 years ago
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  1. 0

    Following exception is thrown when starting XD admin withe ZK holding the stream data: 2015-03-23 17:21:13,831 1.2.0.SNAP ERROR LeaderSelector-0 leader.LeaderSelector - The leader threw an exception java.lang.NullPointerException at com.fasterxml.jackson.core.JsonFactory.createParser(JsonFactory.java:822) at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:896) at org.springframework.xd.dirt.stream.zookeeper.ZooKeeperStreamDefinitionRepository.findOne(ZooKeeperStreamDefinitionRepository.java:157) at org.springframework.xd.dirt.stream.zookeeper.ZooKeeperStreamDefinitionRepository.findOne(ZooKeeperStreamDefinitionRepository.java:56) at org.springframework.xd.dirt.stream.dsl.StreamConfigParser.lookupStream(StreamConfigParser.java:654) at org.springframework.xd.dirt.stream.dsl.ChannelNode.resolve(ChannelNode.java:144) at org.springframework.xd.dirt.stream.dsl.SourceChannelNode.resolve(SourceChannelNode.java:54) at org.springframework.xd.dirt.stream.dsl.StreamNode.resolve(StreamNode.java:125) at org.springframework.xd.dirt.stream.dsl.StreamConfigParser.parse(StreamConfigParser.java:110) at org.springframework.xd.dirt.stream.XDStreamParser.parse(XDStreamParser.java:121) at org.springframework.xd.dirt.stream.StreamFactory.createStream(StreamFactory.java:84) at org.springframework.xd.dirt.server.admin.deployment.zk.DeploymentLoader.loadStream(DeploymentLoader.java:101) at org.springframework.xd.dirt.server.admin.deployment.zk.DefaultDeploymentStateRecalculator.recalculateStreamStates(DefaultDeploymentStateRecalculator.java:96) at org.springframework.xd.dirt.server.admin.deployment.zk.DefaultDeploymentStateRecalculator.onSupervisorElected(DefaultDeploymentStateRecalculator.java:182) at org.springframework.xd.dirt.server.admin.deployment.zk.DeploymentSupervisor$LeaderListener.takeLeadership(DeploymentSupervisor.java:468) at org.apache.curator.framework.recipes.leader.LeaderSelector$WrappedListener.takeLeadership(LeaderSelector.java:536) at org.apache.curator.framework.recipes.leader.LeaderSelector.doWork(LeaderSelector.java:398) at org.apache.curator.framework.recipes.leader.LeaderSelector.doWorkLoop(LeaderSelector.java:443) at org.apache.curator.framework.recipes.leader.LeaderSelector.access$100(LeaderSelector.java:63) at org.apache.curator.framework.recipes.leader.LeaderSelector$2.call(LeaderSelector.java:244) at org.apache.curator.framework.recipes.leader.LeaderSelector$2.call(LeaderSelector.java:238) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)

    Spring JIRA | 2 years ago | Ilayaperumal Gopinathan
    java.lang.NullPointerException
  2. 0

    Following exception is thrown when starting XD admin withe ZK holding the stream data: 2015-03-23 17:21:13,831 1.2.0.SNAP ERROR LeaderSelector-0 leader.LeaderSelector - The leader threw an exception java.lang.NullPointerException at com.fasterxml.jackson.core.JsonFactory.createParser(JsonFactory.java:822) at com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:896) at org.springframework.xd.dirt.stream.zookeeper.ZooKeeperStreamDefinitionRepository.findOne(ZooKeeperStreamDefinitionRepository.java:157) at org.springframework.xd.dirt.stream.zookeeper.ZooKeeperStreamDefinitionRepository.findOne(ZooKeeperStreamDefinitionRepository.java:56) at org.springframework.xd.dirt.stream.dsl.StreamConfigParser.lookupStream(StreamConfigParser.java:654) at org.springframework.xd.dirt.stream.dsl.ChannelNode.resolve(ChannelNode.java:144) at org.springframework.xd.dirt.stream.dsl.SourceChannelNode.resolve(SourceChannelNode.java:54) at org.springframework.xd.dirt.stream.dsl.StreamNode.resolve(StreamNode.java:125) at org.springframework.xd.dirt.stream.dsl.StreamConfigParser.parse(StreamConfigParser.java:110) at org.springframework.xd.dirt.stream.XDStreamParser.parse(XDStreamParser.java:121) at org.springframework.xd.dirt.stream.StreamFactory.createStream(StreamFactory.java:84) at org.springframework.xd.dirt.server.admin.deployment.zk.DeploymentLoader.loadStream(DeploymentLoader.java:101) at org.springframework.xd.dirt.server.admin.deployment.zk.DefaultDeploymentStateRecalculator.recalculateStreamStates(DefaultDeploymentStateRecalculator.java:96) at org.springframework.xd.dirt.server.admin.deployment.zk.DefaultDeploymentStateRecalculator.onSupervisorElected(DefaultDeploymentStateRecalculator.java:182) at org.springframework.xd.dirt.server.admin.deployment.zk.DeploymentSupervisor$LeaderListener.takeLeadership(DeploymentSupervisor.java:468) at org.apache.curator.framework.recipes.leader.LeaderSelector$WrappedListener.takeLeadership(LeaderSelector.java:536) at org.apache.curator.framework.recipes.leader.LeaderSelector.doWork(LeaderSelector.java:398) at org.apache.curator.framework.recipes.leader.LeaderSelector.doWorkLoop(LeaderSelector.java:443) at org.apache.curator.framework.recipes.leader.LeaderSelector.access$100(LeaderSelector.java:63) at org.apache.curator.framework.recipes.leader.LeaderSelector$2.call(LeaderSelector.java:244) at org.apache.curator.framework.recipes.leader.LeaderSelector$2.call(LeaderSelector.java:238) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.run(FutureTask.java:262) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745)

    Spring JIRA | 2 years ago | Ilayaperumal Gopinathan
    java.lang.NullPointerException
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    Unit-testing flink application with streaming data

    Stack Overflow | 6 months ago | pavan
    java.lang.NullPointerException
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Root Cause Analysis

  1. java.lang.NullPointerException

    No message provided

    at com.fasterxml.jackson.core.JsonFactory.createParser()
  2. Jackson-core
    JsonFactory.createParser
    1. com.fasterxml.jackson.core.JsonFactory.createParser(JsonFactory.java:822)
    1 frame
  3. Jackson
    ObjectReader.readValue
    1. com.fasterxml.jackson.databind.ObjectReader.readValue(ObjectReader.java:896)
    1 frame
  4. org.springframework.xd
    DeploymentSupervisor$LeaderListener.takeLeadership
    1. org.springframework.xd.dirt.stream.zookeeper.ZooKeeperStreamDefinitionRepository.findOne(ZooKeeperStreamDefinitionRepository.java:157)
    2. org.springframework.xd.dirt.stream.zookeeper.ZooKeeperStreamDefinitionRepository.findOne(ZooKeeperStreamDefinitionRepository.java:56)
    3. org.springframework.xd.dirt.stream.dsl.StreamConfigParser.lookupStream(StreamConfigParser.java:654)
    4. org.springframework.xd.dirt.stream.dsl.ChannelNode.resolve(ChannelNode.java:144)
    5. org.springframework.xd.dirt.stream.dsl.SourceChannelNode.resolve(SourceChannelNode.java:54)
    6. org.springframework.xd.dirt.stream.dsl.StreamNode.resolve(StreamNode.java:125)
    7. org.springframework.xd.dirt.stream.dsl.StreamConfigParser.parse(StreamConfigParser.java:110)
    8. org.springframework.xd.dirt.stream.XDStreamParser.parse(XDStreamParser.java:121)
    9. org.springframework.xd.dirt.stream.StreamFactory.createStream(StreamFactory.java:84)
    10. org.springframework.xd.dirt.server.admin.deployment.zk.DeploymentLoader.loadStream(DeploymentLoader.java:101)
    11. org.springframework.xd.dirt.server.admin.deployment.zk.DefaultDeploymentStateRecalculator.recalculateStreamStates(DefaultDeploymentStateRecalculator.java:96)
    12. org.springframework.xd.dirt.server.admin.deployment.zk.DefaultDeploymentStateRecalculator.onSupervisorElected(DefaultDeploymentStateRecalculator.java:182)
    13. org.springframework.xd.dirt.server.admin.deployment.zk.DeploymentSupervisor$LeaderListener.takeLeadership(DeploymentSupervisor.java:468)
    13 frames
  5. Curator Recipes
    LeaderSelector$2.call
    1. org.apache.curator.framework.recipes.leader.LeaderSelector$WrappedListener.takeLeadership(LeaderSelector.java:536)
    2. org.apache.curator.framework.recipes.leader.LeaderSelector.doWork(LeaderSelector.java:398)
    3. org.apache.curator.framework.recipes.leader.LeaderSelector.doWorkLoop(LeaderSelector.java:443)
    4. org.apache.curator.framework.recipes.leader.LeaderSelector.access$100(LeaderSelector.java:63)
    5. org.apache.curator.framework.recipes.leader.LeaderSelector$2.call(LeaderSelector.java:244)
    6. org.apache.curator.framework.recipes.leader.LeaderSelector$2.call(LeaderSelector.java:238)
    6 frames
  6. Java RT
    Thread.run
    1. java.util.concurrent.FutureTask.run(FutureTask.java:262)
    2. java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    3. java.util.concurrent.FutureTask.run(FutureTask.java:262)
    4. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    5. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    6. java.lang.Thread.run(Thread.java:745)
    6 frames