使用tunnel时，如何用多个block啊？

[thesby]

from odps.tunnel import TableTunnel

table = o.get_table('my_table')

tunnel = TableTunnel(odps)
upload_session = tunnel.create_upload_session(table.name, partition_spec='pt=test')

with upload_session.open_record_writer(0) as writer:
    record = table.new_record()
    record[0] = 'test1'
    record[1] = 'id1'
    writer.write(record)

    record = table.new_record(['test2', 'id2'])
    writer.write(record)

upload_session.commit([0])

这里使用只有一个block_id，感觉速度不够快，怎么能够加快这个操作呢？因为record非常多，需要的时间较长。

[qinxuye]

open_record_writer(0) 

这个 0 就是 block_id，你可以多开几个，每个对应一个 block_id