info=`{ver:7.3.2,ResponseInfo:1489370898075867,status:400, reqId:wxoAAJKRoYAdUKsU, xlog:body;UP/400;UP:1/400, xvia:, host:upload.qiniu.com, path:/bput/vpxCzyOCMcK9HsFDAKjv4QEI2iHU9U6rFMBTbJcITSBb9M35tubBXmWQiz4DQuIXELiFxC4hcQuIXELiFzvYnWd8753zvnfO-d8753zvnfO-d8753zvneEebwVS7AFAAcqO-d8753zvnfO-d8wAAAAAASD8AAAAAAAAAQAAASD8AQVhZQUFNVDF4VmkxNng0QQ==/4147200, ip:/115.231.97.46:80, port:80, duration:37945.000000 s, time:1489372189, sent:0,error:too many data to read, block capacity is 4194304 bytes, 4147200 byte(s) used}`
response=`{"error":"too many data to read, block capacity is 4194304 bytes, 4147200 byte(s) used"}`

七牛上传文件发生这样的错误