Question

我在所有这些节点上使用了三个节点的集群我已经将Java从1.7升级到1.8，之后我无法在其中任何一个上启动cassandra。抛出以下错误

此外，当我清除其中一个节点上的数据并尝试启动它时。我认为这是一些java问题。对此有什么解决方案吗？

INFO  10:10:59 Initializing cw.usedcareventsbyprofileidnew
INFO  10:10:59 Opening /usr/local/hadoop/cassandra2112/data/data/cw/usedcareventsbyprofileidnew-5edbdef0ad4311e5856d07fc426478ef/cw-usedcareventsbyprofileidnew-ka-25 (174 bytes) 
ERROR 10:10:59 Exception encountered during startup java.lang.NullPointerException: null at java.util.HashMap.<init>(HashMap.java:294)
 ~[na:1.7.0_95] at org.apache.cassandra.db.index.composites.CompositesIndex.validateOptions(CompositesIndex.java:156) 
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.db.index.SecondaryIndex.createInstance(SecondaryIndex.java:364)
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.db.index.SecondaryIndexManager.addIndexedColumn(SecondaryIndexManager.java:283)
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:386) 
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:523)
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:494)
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.db.Keyspace.initCf(Keyspace.java:335)
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.db.Keyspace.<init>(Keyspace.java:275)
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.db.Keyspace.open(Keyspace.java:121)
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.db.Keyspace.open(Keyspace.java:98)
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:328)
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:562) 
 ~[apache-cassandra-2.1.12.jar:2.1.12] at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:651) 
 ~[apache-cassandra-2.1.12.jar:2.1.12] java.lang.NullPointerException   at java.util.HashMap.<init>(HashMap.java:294) 
  at org.apache.cassandra.db.index.composites.CompositesIndex.validateOptions(CompositesIndex.java:156) 
  at org.apache.cassandra.db.index.SecondaryIndex.createInstance(SecondaryIndex.java:364) 
  at org.apache.cassandra.db.index.SecondaryIndexManager.addIndexedColumn(SecondaryIndexManager.java:283) 
  at org.apache.cassandra.db.ColumnFamilyStore.<init>(ColumnFamilyStore.java:386) 
  at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:523) 
  at org.apache.cassandra.db.ColumnFamilyStore.createColumnFamilyStore(ColumnFamilyStore.java:494) 
  at org.apache.cassandra.db.Keyspace.initCf(Keyspace.java:335) 
  at org.apache.cassandra.db.Keyspace.<init>(Keyspace.java:275) 
  at org.apache.cassandra.db.Keyspace.open(Keyspace.java:121) 
  at org.apache.cassandra.db.Keyspace.open(Keyspace.java:98) 
  at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:328) 
  at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:562) 
  at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:651) 
  Exception encountered during startup: null

Answer 1

如果indexOptions为null，则将其设置为 Collections.emptyMap（）

public void validateOptions() throws ConfigurationException {
        ColumnDefinition columnDef = columnDefs.iterator().next();
        Map<String, String> indexOptions = columnDef.getIndexOptions();
        if (indexOptions == null) {
            indexOptions = Collections.emptyMap();
        }
        Map<String, String> options = new HashMap<>(indexOptions);

        // We used to have an option called "prefix_size" so skip it silently for backward compatibility sake.
        options.remove("prefix_size");

        if (columnDef.type.isCollection())
        {
            options.remove(SecondaryIndex.INDEX_VALUES_OPTION_NAME);
            options.remove(SecondaryIndex.INDEX_KEYS_OPTION_NAME);
        }

        if (!options.isEmpty())
            throw new ConfigurationException("Unknown options provided for COMPOSITES index: " + options.keySet());
    }

无法启动cassandra因为java版本的变化

1 个答案: