Question

虽然插入到Cassandra db这个错误来了，我正在向数据库插入非常大的数据，这个错误是因为内存，我有足够的磁盘空间，因为我知道数据库中的行可以容纳20亿条记录所以我我缺少列范围配置。

Exception in thread "main" com.datastax.driver.core.exceptions.InvalidQueryException: The sum of all clustering columns is too long (65927 > 65535)
        at com.datastax.driver.core.exceptions.InvalidQueryException.copy(InvalidQueryException.java:35)
        at com.datastax.driver.core.DefaultResultSetFuture.extractCauseFromExecutionException(DefaultResultSetFuture.java:259)
        at com.datastax.driver.core.DefaultResultSetFuture.getUninterruptibly(DefaultResultSetFuture.java:175)
        at com.datastax.driver.core.AbstractSession.execute(AbstractSession.java:52)
        at FileLogger.persistData(FileLogger.java:91)
        at FileLogger.main(FileLogger.java:59)
Caused by: com.datastax.driver.core.exceptions.InvalidQueryException: The sum of all clustering columns is too long (65927 > 65535)

Answer 1

看起来很清楚，你的总和列名大于预期的cassandra（0XFFFF = 65535）。

您可以减少名称，要么必须划分查询。

来自：Link

105     public static void validateColumnNames(Iterable<ByteBuffer> columnNames) throws InvalidRequestException
106     {
107         for (ByteBuffer name : columnNames)
108             validateColumnName(name);
109     }
110
111     public static void validateColumnName(ByteBuffer name) throws InvalidRequestException
112     {
113         if (name.remaining() > IColumn.MAX_NAME_LENGTH)
114             throw new InvalidRequestException(String.format("The sum of all clustering columns is too long (%s > %s)",
115                                                             name.remaining(),
116                                                             IColumn.MAX_NAME_LENGTH));
117
118         if (name.remaining() == 0)
119             throw new InvalidRequestException("Invalid empty value for clustering column of COMPACT TABLE");
120     }

所有聚类列的总和太长（65927> 65535）

1 个答案: