java.lang.NullPointerException

DataStax JIRA | Viliam Holub | 3 years ago
  1. 0

    The Java driver fails with a NullPointerException when connecting to a Cassandra 1.2 cluster in which some CFs are not CQL tables. Steps to reproduce: In cassandra-cli: {code} $ cassandra-cli Connected to: "Test Cluster" on 127.0.0.1/9160 Welcome to Cassandra CLI version 1.2.15-SNAPSHOT Type 'help;' or '?' for help. Type 'quit;' or 'exit;' to quit. [default@unknown] create keyspace ks1; 28f919c1-d616-373e-a529-4fd61e3c5303 [default@unknown] use ks1; Authenticated to keyspace: ks1 [default@ks1] create column family cf1; c68b19b9-0a21-34c7-b4a7-e8edbd9fa6f1 {code} A call to cluster.connect() fails with: {code} Exception in thread "main" java.lang.NullPointerException at com.datastax.driver.core.Metadata.buildTableMetadata(Metadata.java:127) at com.datastax.driver.core.Metadata.rebuildSchema(Metadata.java:92) at com.datastax.driver.core.ControlConnection.refreshSchema(ControlConnection.java:291) at com.datastax.driver.core.ControlConnection.tryConnect(ControlConnection.java:230) at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:170) at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:78) at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:977) at com.datastax.driver.core.Cluster$Manager.newSession(Cluster.java:1014) at com.datastax.driver.core.Cluster$Manager.access$200(Cluster.java:889) at com.datastax.driver.core.Cluster.connect(Cluster.java:170) {code}

    DataStax JIRA | 3 years ago | Nicolas Favre-Felix
    java.lang.NullPointerException
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  3. 0

    The Java driver fails with a NullPointerException when connecting to a Cassandra 1.2 cluster in which some CFs are not CQL tables. Steps to reproduce: In cassandra-cli: {code} $ cassandra-cli Connected to: "Test Cluster" on 127.0.0.1/9160 Welcome to Cassandra CLI version 1.2.15-SNAPSHOT Type 'help;' or '?' for help. Type 'quit;' or 'exit;' to quit. [default@unknown] create keyspace ks1; 28f919c1-d616-373e-a529-4fd61e3c5303 [default@unknown] use ks1; Authenticated to keyspace: ks1 [default@ks1] create column family cf1; c68b19b9-0a21-34c7-b4a7-e8edbd9fa6f1 {code} A call to cluster.connect() fails with: {code} Exception in thread "main" java.lang.NullPointerException at com.datastax.driver.core.Metadata.buildTableMetadata(Metadata.java:127) at com.datastax.driver.core.Metadata.rebuildSchema(Metadata.java:92) at com.datastax.driver.core.ControlConnection.refreshSchema(ControlConnection.java:291) at com.datastax.driver.core.ControlConnection.tryConnect(ControlConnection.java:230) at com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:170) at com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:78) at com.datastax.driver.core.Cluster$Manager.init(Cluster.java:977) at com.datastax.driver.core.Cluster$Manager.newSession(Cluster.java:1014) at com.datastax.driver.core.Cluster$Manager.access$200(Cluster.java:889) at com.datastax.driver.core.Cluster.connect(Cluster.java:170) {code}

    DataStax JIRA | 3 years ago | Nicolas Favre-Felix
    java.lang.NullPointerException
  4. 0

    Android: Saving Map State in Google map

    Stack Overflow | 11 months ago | Junie Negentien
    java.lang.RuntimeException: Unable to resume activity {com.ourThesis.junieNegentien2015/com.ourThesis.junieNegentien2015.MainActivity}: java.lang.NullPointerException

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    Root Cause Analysis

    1. java.lang.NullPointerException

      No message provided

      at com.datastax.driver.core.ReplicationStrategy$NetworkTopologyStrategy.computeTokenToReplicaMap()
    2. DataStax Java Driver for Apache Cassandra - Core
      Cluster.connect
      1. com.datastax.driver.core.ReplicationStrategy$NetworkTopologyStrategy.computeTokenToReplicaMap(ReplicationStategy.java:128)
      2. com.datastax.driver.core.Metadata$TokenMap.build(Metadata.java:288)
      3. com.datastax.driver.core.Metadata.rebuildTokenMap(Metadata.java:142)
      4. com.datastax.driver.core.ControlConnection.refreshNodeListAndTokenMap(ControlConnection.java:385)
      5. com.datastax.driver.core.ControlConnection.refreshSchema(ControlConnection.java:263)
      6. com.datastax.driver.core.ControlConnection.tryConnect(ControlConnection.java:214)
      7. com.datastax.driver.core.ControlConnection.reconnectInternal(ControlConnection.java:161)
      8. com.datastax.driver.core.ControlConnection.connect(ControlConnection.java:77)
      9. com.datastax.driver.core.Cluster$Manager.init(Cluster.java:890)
      10. com.datastax.driver.core.Cluster$Manager.newSession(Cluster.java:910)
      11. com.datastax.driver.core.Cluster$Manager.access$200(Cluster.java:806)
      12. com.datastax.driver.core.Cluster.connect(Cluster.java:158)
      12 frames