Is there a way to show only form output in a Zeppelin paragraph?

rgelhausen — Sun, 18 Aug 2019 10:42:15 GMT

I'm using Zeppelin to build a simple interactive dashboard. I allow the user to select values from a dropdown, and want to show them the picklist, but not show them the Scala output underneath it. If I use the "Hide Output" button, my picklist is hidden as well.

See attached screenshot and code snippet:

val nodes = sqlContext.sql("select distinct node from nodes").collect().map(x => (x(0).asInstanceOf[String], x(0).asInstanceOf[String]))


val query = """
select
 concat_ws(',', collect_list(date_format(datetime, 'HH:mm'))) as time,
 concat_ws(',', collect_list(cast(diskbusy as string))) as Disk,
 concat_ws(',', collect_list(cast(cpuuser as string))) as CPUUser,
 concat_ws(',', collect_list(cast(cpusys as string))) as CPUSys,
 concat_ws(',', collect_list(cast(round(cpusys+cpuuser, 2) as string))) as CPU,
 concat_ws(',', collect_list(cast(round(100*memavailable/memtotal, 2) as string))) as Mem,
 concat_ws(',', collect_list(cast(greatest(unknown.requests, 0) as string))) as ExternalRequests,
 concat_ws(',', collect_list(cast(greatest(known.requests, 0) as string))) as InternalRequests,
 concat_ws(',', collect_list(cast(greatest(known.requests, 0) + greatest(unknown.requests, 0) as string))) as TotalRequests,
 concat_ws(',', collect_list(cast(round(memavailable/1000, 0) as string))) as MemAvail
from node_monitoring
left outer join (
  select date_format(datetime, 'HH:mm') as time, app_host, count(*) as requests
  from web_logs_enriched
  where source_host is not null or source_ip = '127.0.0.1'
  group by date_format(datetime, 'HH:mm'), app_host
) known
on node_monitoring.node = known.app_host and date_format(node_monitoring.datetime, 'HH:mm') = known.time
left outer join (
  select date_format(datetime, 'HH:mm') as time, app_host, count(*) as requests
  from web_logs_enriched
  where source_host is null
  group by date_format(datetime, 'HH:mm'), app_host
) unknown
on node_monitoring.node = unknown.app_host and date_format(node_monitoring.datetime, 'HH:mm') = unknown.time
where node = '""" + z.select("node", nodes) + """'
group by node
"""
val data2 = sqlContext.sql(query)
z.angularBind("data2", data2.collect())
z.angularBind("data2Schema", data2.schema)

Re: Is there a way to show only form output in a Zeppelin paragraph?

vshukla — Wed, 10 Aug 2016 22:44:04 GMT

@Randy Gelhausen You can switch your notebook to the report view, please see the dropdown top right. Screenshot attached.

Is this what you are looking for?

screen-shot-2016-08-10-at-114601-am.png

Re: Is there a way to show only form output in a Zeppelin paragraph?

rgelhausen — Sun, 18 Aug 2019 10:42:06 GMT

In report view, Zeppelin is still printing object reference information.

I want only the dropdown (green circle) to show to the end-user, and hide the standard Scala repl output (red rectangle).

Re: Is there a way to show only form output in a Zeppelin paragraph?

rgelhausen — Wed, 10 Aug 2016 23:18:02 GMT

I found the answer. In the Spark interpreter menu there is a "zeppelin.spark.printREPLOutput" property which you can set to false.

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Is there a way to show only form output in a Zeppelin paragraph?

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Re: Is there a way to show only form output in a Zeppelin paragraph?