java.lang.Exception: java.net.ConnectException: 接続を拒否されました

qiita.com | 3 months ago
  1. 0

    Transparent Encryption in HDFS を試してみる - Qiita

    qiita.com | 3 months ago
    java.lang.Exception: java.net.ConnectException: 接続を拒否されました
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    Java suddenly crashed

    Stack Overflow | 1 year ago | Iva
    java.net.ConnectException: Invalid argument
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    Activator fails to start when port 8888 is already bound.

    GitHub | 3 years ago | senia-psm
    java.net.ConnectException: Connection refused
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    hello:

    GitHub | 3 years ago | luxr123
    java.net.ConnectException: Connection timed out
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Root Cause Analysis

  1. java.net.ConnectException

    接続を拒否されました

    at java.net.PlainSocketImpl.socketConnect()
  2. Java RT
    HttpURLConnection.connect
    1. java.net.PlainSocketImpl.socketConnect(Native Method)
    2. java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
    3. java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
    4. java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
    5. java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    6. java.net.Socket.connect(Socket.java:589)
    7. sun.net.NetworkClient.doConnect(NetworkClient.java:175)
    8. sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
    9. sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
    10. sun.net.www.http.HttpClient.<init>(HttpClient.java:211)
    11. sun.net.www.http.HttpClient.New(HttpClient.java:308)
    12. sun.net.www.http.HttpClient.New(HttpClient.java:326)
    13. sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1169)
    14. sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1105)
    15. sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:999)
    16. sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:933)
    16 frames
  3. Apache Hadoop Auth
    KerberosAuthenticator.authenticate
    1. org.apache.hadoop.security.authentication.client.KerberosAuthenticator.authenticate(KerberosAuthenticator.java:190)
    1 frame
  4. org.apache.hadoop
    DelegationTokenAuthenticator.authenticate
    1. org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticator.authenticate(DelegationTokenAuthenticator.java:128)
    1 frame
  5. Apache Hadoop Auth
    AuthenticatedURL.openConnection
    1. org.apache.hadoop.security.authentication.client.AuthenticatedURL.openConnection(AuthenticatedURL.java:215)
    1 frame
  6. org.apache.hadoop
    KMSClientProvider$1.run
    1. org.apache.hadoop.security.token.delegation.web.DelegationTokenAuthenticatedURL.openConnection(DelegationTokenAuthenticatedURL.java:322)
    2. org.apache.hadoop.crypto.key.kms.KMSClientProvider$1.run(KMSClientProvider.java:486)
    3. org.apache.hadoop.crypto.key.kms.KMSClientProvider$1.run(KMSClientProvider.java:481)
    3 frames
  7. Java RT
    Subject.doAs
    1. java.security.AccessController.doPrivileged(Native Method)
    2. javax.security.auth.Subject.doAs(Subject.java:422)
    2 frames
  8. Hadoop
    UserGroupInformation.doAs
    1. org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1729)
    1 frame
  9. org.apache.hadoop
    KeyProviderCryptoExtension.decryptEncryptedKey
    1. org.apache.hadoop.crypto.key.kms.KMSClientProvider.createConnection(KMSClientProvider.java:481)
    2. org.apache.hadoop.crypto.key.kms.KMSClientProvider.decryptEncryptedKey(KMSClientProvider.java:774)
    3. org.apache.hadoop.crypto.key.KeyProviderCryptoExtension.decryptEncryptedKey(KeyProviderCryptoExtension.java:388)
    3 frames
  10. Apache Hadoop HDFS
    DistributedFileSystem$3.doCall
    1. org.apache.hadoop.hdfs.DFSClient.decryptEncryptedDataEncryptionKey(DFSClient.java:901)
    2. org.apache.hadoop.hdfs.DFSClient.createWrappedInputStream(DFSClient.java:969)
    3. org.apache.hadoop.hdfs.DistributedFileSystem$3.doCall(DistributedFileSystem.java:273)
    4. org.apache.hadoop.hdfs.DistributedFileSystem$3.doCall(DistributedFileSystem.java:268)
    4 frames
  11. Hadoop
    FileSystemLinkResolver.resolve
    1. org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
    1 frame
  12. Apache Hadoop HDFS
    DistributedFileSystem.open
    1. org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:280)
    1 frame
  13. Hadoop
    FileSystem.open
    1. org.apache.hadoop.fs.FileSystem.open(FileSystem.java:777)
    1 frame
  14. Hadoop
    LocalJobRunner$Job$MapTaskRunnable.run
    1. org.apache.hadoop.mapreduce.lib.input.LineRecordReader.initialize(LineRecordReader.java:85)
    2. org.apache.hadoop.mapred.MapTask$NewTrackingRecordReader.initialize(MapTask.java:548)
    3. org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:786)
    4. org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
    5. org.apache.hadoop.mapred.LocalJobRunner$Job$MapTaskRunnable.run(LocalJobRunner.java:271)
    5 frames
  15. Java RT
    Thread.run
    1. java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
    2. java.util.concurrent.FutureTask.run(FutureTask.java:266)
    3. java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    4. java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    5. java.lang.Thread.run(Thread.java:745)
    5 frames