1
我已经做了散装装载机key_validation_class = LexicalUUIDType新行本code的帮助,但我已经改变了行键我key_validation_class = AsciiType或key_validation_class = UTF8Type在为了使字符串作为行键批量加载在卡桑德拉:String作为在卡桑德拉
create column family Users1
with key_validation_class=AsciiType
and comparator=AsciiType
AND column_metadata = [
{column_name: timestamp1, validation_class: AsciiType}
{column_name: symbol, validation_class: AsciiType}
{column_name: Bid_Price, validation_class:AsciiType}
{column_name: Ask_Price, validation_class:AsciiType}
];
我曾尝试以使行键为字符串类型,但收到错误或代码中所有可能发生的变化,即使没有usersWriter.newRow没有ABL E要写入的SSTable
while ((line = reader.readLine()) != null)
{
if (entry.parse(line, lineNumber))
{
//usersWriter.newRow(uuid);
usersWriter.newRow(String.valueOf(lineNumber));
usersWriter.addColumn(bytes("symbol"), bytes(entry.symbol), timestamp);
usersWriter.addColumn(bytes("timestamp1"), bytes(entry.timestamp1), timestamp);
usersWriter.addColumn(bytes("Bid_Price"), bytes(entry.Bid_Price), timestamp);
usersWriter.addColumn(bytes("Ask_Price"), bytes(entry.Ask_Price), timestamp);
}
lineNumber++;
}
得到一个错误,因为预期它只能采取字节缓冲区
usersWriter.newRow(String.valueOf(lineNumber));
^
required: ByteBuffer
found: String
reason: actual argument String cannot be converted to ByteBuffer by method invocation conversion
任何帮助,使字符串作为行键中的SSTable对上述列族definition.thanks。