Java 运行时异常：未知的比较器'；复合类型'；

我需要在Cassandra Columns族中创建复合柱

每个列值都将存储如下内容-

user-id   column1
123      (Column1-Value  Column1-SchemaName  LastModifiedDate)

create column family USER_DATA
with key_validation_class = 'UTF8Type'
and comparator = 'CompositeType(ByteType,UTF8Type,DateType)'
and default_validation_class = 'UTF8Type'
and gc_grace = 86400
and column_metadata = [ {column_name : 'lmd', validation_class : DateType}];

第2列和其他列也是如此。所以我决定这样做-

user-id   column1
123      (Column1-Value  Column1-SchemaName  LastModifiedDate)

create column family USER_DATA
with key_validation_class = 'UTF8Type'
and comparator = 'CompositeType(ByteType,UTF8Type,DateType)'
and default_validation_class = 'UTF8Type'
and gc_grace = 86400
and column_metadata = [ {column_name : 'lmd', validation_class : DateType}];

以下是各列的说明-

ByteType for Column-Value
UTF8Type for Column-SchemaName
DateType for LastModifiedDate

我像这样创建了下面的columnfamily-

user-id   column1
123      (Column1-Value  Column1-SchemaName  LastModifiedDate)

create column family USER_DATA
with key_validation_class = 'UTF8Type'
and comparator = 'CompositeType(ByteType,UTF8Type,DateType)'
and default_validation_class = 'UTF8Type'
and gc_grace = 86400
and column_metadata = [ {column_name : 'lmd', validation_class : DateType}];

让我知道这是否是创建上述柱族的正确方法

但是当我尝试执行上面的列时，我总是得到下面的错误

[default@userks]     create column family USER_DATA
...         with key_validation_class = 'UTF8Type'
...         and comparator = 'CompositeType(ByteType,UTF8Type,DateType)'
...         and default_validation_class = 'UTF8Type'
...         and gc_grace = 86400
...         and column_metadata = [ {column_name : 'lmd', validation_class : DateType}];

java.lang.RuntimeException: Unknown comparator 'CompositeType(ByteType,UTF8Type,DateType)'. Available functions: bytes, integer, long, int, lexicaluui
d, timeuuid, utf8, ascii, double, countercolumn.

有人能帮我吗

更新：-

我刚发现那个错误，我忘了在ByteType中添加额外的

s

下面是一个家庭-

create column family USER_DATA
with key_validation_class = 'UTF8Type'
and comparator = 'CompositeType(BytesType,UTF8Type,DateType)'
and default_validation_class = 'UTF8Type'
and gc_grace = 86400
and column_metadata = [ {column_name : 'lmd', validation_class : DateType}];

下面是我得到的错误

[default@beprofileks]     create column family USER_DATA
...         with key_validation_class = 'UTF8Type'
...         and comparator = 'CompositeType(BytesType,UTF8Type,DateType)'
...         and default_validation_class = 'UTF8Type'
...         and gc_grace = 86400
...         and column_metadata = [ {column_name : 'lmd', validation_class : DateType}];

java.lang.RuntimeException: org.apache.cassandra.db.marshal.MarshalException: cannot parse 'lmd' as hex bytes

---

它应该是

BytesType

，而不是

ByteType

：

CompositeType(BytesType,UTF8Type,DateType)

---

另一个问题是，

lmd

不是comparator

CompositeType（ByTestType、UTF8Type、DateType）的有效列名

。有效名称是，例如，

aa00:string:2013-09-19

我的错误。我刚刚发现了那个错误。。但在做了那个改变之后，我又得到了一个例外。我也编辑了我的问题。