java – 仅使用辅助全局索引查询Dynamo表

我试图使用辅助全局索引查询Dynamodb表,我得到 java.lang.IllegalArgumentException：非法查询表达式：在查询中找不到散列键条件.我所要做的就是在不考虑密钥的情况下获取时间戳大于值的所有项目.时间戳不是键或范围键的一部分,因此我为它创建了一个全局索引.

有没有人知道我可能会缺少什么？

表定义：

{
   AttributeDefinitions:[
      {
         AttributeName:timestamp,AttributeType:N
      },{
         AttributeName:url,AttributeType:S
      }
   ],TableName:SitePageIndexed,KeySchema:[
      {
         AttributeName:url,KeyType:HASH
      }
   ],TableStatus:ACTIVE,CreationDateTime:   Mon May 12 18:45:57   EDT 2014,ProvisionedThroughput:{
      NumberOfDecreasesToday:0,ReadCapacityUnits:8,WriteCapacityUnits:4
   },TableSizeBytes:0,ItemCount:0,GlobalSecondaryIndexes:[
      {
         IndexName:TimestampIndex,KeySchema:[
            {
               AttributeName:timestamp,KeyType:HASH
            }
         ],Projection:{
            ProjectionType:ALL,},IndexStatus:ACTIVE,ProvisionedThroughput:{
            NumberOfDecreasesToday:0,WriteCapacityUnits:4
         },IndexSizeBytes:0,ItemCount:0
      }
   ]
}

码

Condition condition1 = new Condition().withComparisonOperator(ComparisonOperator.GE).withAttributeValueList(new AttributeValue().withN(Long.toString(start)));      
DynamoDBQueryExpression<SitePageIndexed> exp = new DynamoDBQueryExpression<SitePageIndexed>().withRangeKeyCondition("timestamp",condition1);
exp.setScanIndexForward(true);
exp.setLimit(100);
exp.setIndexName("TimestampIndex");

PaginatedQueryList<SitePageIndexed> queryList = client.query(SitePageIndexed.class,exp);