[PANIC] for Kapacitor show with batch and bad dbrp

[nathanielc]

kapacitor show usg_rate_batch
2016/01/27 19:03:40 http: panic serving 127.0.0.1:38722: runtime error: index out of range
goroutine 92110 [running]:
net/http.(*conn).serve.func1(0xc820521760, 0x7f1f69806a50, 0xc8201e0450)
    /usr/local/go/src/net/http/server.go:1287 +0xb5
github.com/influxdb/kapacitor.(*node).edot(0xc822befee0, 0xc820325180)
    /gopath/src/github.com/influxdb/kapacitor/node.go:162 +0x44c
github.com/influxdb/kapacitor.(*ExecutingTask).EDot.func1(0x7f1f56cea1f8, 0xc822befee0, 0x0, 0x0)
    /gopath/src/github.com/influxdb/kapacitor/task.go:297 +0x3f
github.com/influxdb/kapacitor.(*ExecutingTask).walk(0xc8205e2730, 0xc82f5d72b0, 0x0, 0x0)
    /gopath/src/github.com/influxdb/kapacitor/task.go:131 +0xb6
github.com/influxdb/kapacitor.(*ExecutingTask).EDot(0xc8205e2730, 0x0, 0x0, 0x0)
    /gopath/src/github.com/influxdb/kapacitor/task.go:299 +0x196
github.com/influxdb/kapacitor.(*TaskMaster).ExecutingDot(0xc82014e000, 0xc82f28d306, 0xe, 0x0, 0x0)
    /gopath/src/github.com/influxdb/kapacitor/task_master.go:241 +0xe1
github.com/influxdb/kapacitor/services/task_store.(*Service).handleTask(0xc820018a80, 0x7f1f56f0a580, 0xc82f1b6fc0, 0xc8201a8c40)
    /gopath/src/github.com/influxdb/kapacitor/services/task_store/service.go:224 +0x2a2
github.com/influxdb/kapacitor/services/task_store.(*Service).(github.com/influxdb/kapacitor/services/task_store.handleTask)-fm(0x7f1f56f0a580, 0xc82f1b6fc0, 0xc8201a8c40)
    /gopath/src/github.com/influxdb/kapacitor/services/task_store/service.go:79 +0x3e
net/http.HandlerFunc.ServeHTTP(0xc820188560, 0x7f1f56f0a580, 0xc82f1b6fc0, 0xc8201a8c40)
    /usr/local/go/src/net/http/server.go:1422 +0x3a
github.com/influxdb/kapacitor/services/httpd.gzipFilter.func1(0x7f1f56f0a4f8, 0xc82f1b6f80, 0xc8201a8c40)
    /gopath/src/github.com/influxdb/kapacitor/services/httpd/handler.go:497 +0x2af
net/http.HandlerFunc.ServeHTTP(0xc82016a520, 0x7f1f56f0a4f8, 0xc82f1b6f80, 0xc8201a8c40)
    /usr/local/go/src/net/http/server.go:1422 +0x3a
github.com/influxdb/kapacitor/services/httpd.versionHeader.func1(0x7f1f56f0a4f8, 0xc82f1b6f80, 0xc8201a8c40)
    /gopath/src/github.com/influxdb/kapacitor/services/httpd/handler.go:506 +0xc0
net/http.HandlerFunc.ServeHTTP(0xc82016a540, 0x7f1f56f0a4f8, 0xc82f1b6f80, 0xc8201a8c40)
    /usr/local/go/src/net/http/server.go:1422 +0x3a
github.com/influxdb/kapacitor/services/httpd.cors.func1(0x7f1f56f0a4f8, 0xc82f1b6f80, 0xc8201a8c40)
    /gopath/src/github.com/influxdb/kapacitor/services/httpd/handler.go:539 +0x328
net/http.HandlerFunc.ServeHTTP(0xc82016a560, 0x7f1f56f0a4f8, 0xc82f1b6f80, 0xc8201a8c40)
    /usr/local/go/src/net/http/server.go:1422 +0x3a
github.com/influxdb/kapacitor/services/httpd.requestID.func1(0x7f1f56f0a4f8, 0xc82f1b6f80, 0xc8201a8c40)
    /gopath/src/github.com/influxdb/kapacitor/services/httpd/handler.go:549 +0x15d
net/http.HandlerFunc.ServeHTTP(0xc82016a580, 0x7f1f56f0a4f8, 0xc82f1b6f80, 0xc8201a8c40)
    /usr/local/go/src/net/http/server.go:1422 +0x3a
github.com/influxdb/kapacitor/services/httpd.logging.func1(0x7f1f56f0a4f8, 0xc82f1b6f60, 0xc8201a8c40)
    /gopath/src/github.com/influxdb/kapacitor/services/httpd/handler.go:557 +0x10b
net/http.HandlerFunc.ServeHTTP(0xc82016a5a0, 0x7f1f56f0a4f8, 0xc82f1b6f60, 0xc8201a8c40)
    /usr/local/go/src/net/http/server.go:1422 +0x3a
github.com/influxdb/kapacitor/services/httpd.recovery.func1(0x7f1f56f0a4c0, 0xc820521810, 0xc8201a8c40)
    /gopath/src/github.com/influxdb/kapacitor/services/httpd/handler.go:567 +0x114
net/http.HandlerFunc.ServeHTTP(0xc82016a5c0, 0x7f1f56f0a4c0, 0xc820521810, 0xc8201a8c40)
    /usr/local/go/src/net/http/server.go:1422 +0x3a
github.com/influxdb/kapacitor/services/httpd.(*ServeMux).ServeHTTP(0xc820144b10, 0x7f1f56f0a4c0, 0xc820521810, 0xc8201a8c40)
    /gopath/src/github.com/influxdb/kapacitor/services/httpd/mux.go:163 +0x17d
github.com/influxdb/kapacitor/services/httpd.(*Handler).ServeHTTP(0xc820018a20, 0x7f1f56f0a4c0, 0xc820521810, 0xc8201a8c40)
    /gopath/src/github.com/influxdb/kapacitor/services/httpd/handler.go:210 +0x405
net/http.serverHandler.ServeHTTP(0xc820154000, 0x7f1f56f0a4c0, 0xc820521810, 0xc8201a8c40)
    /usr/local/go/src/net/http/server.go:1862 +0x19e
net/http.(*conn).serve(0xc820521760)
    /usr/local/go/src/net/http/server.go:1361 +0xbee
created by net/http.(*Server).Serve
    /usr/local/go/src/net/http/server.go:1910 +0x3f6
Get http://localhost:9092/api/v1/task?name=usg_rate_batch: EOF