question Re: Insert HBase data to a HttpResponse in Archives of Support Questions (Read Only)

Insert HBase data to a HttpResponse

n3_apple — Tue, 21 Jun 2016 04:18:35 GMT

Hey,

I have a HBase table with data and I want to add this data to an HttpResponse. I can access the data with the GetHBase processor and I can also send an HttpResponse with the HandleHttpResponse processor. But until know, I can not combine both --> pull the data from HBase and add this content to the FlowFile of the HttpRequest to send it with the HttpResponse to the client.

How can I solve this problem with NiFi? Do you have any example?

best regards

Re: Insert HBase data to a HttpResponse

bbende — Tue, 21 Jun 2016 04:24:03 GMT

Hello,

The GetHBase processor was created to be a source processor that incrementally extracts data from an HBase table, trying to use the timestamps of the cells to find new data. Unfortunately because of that it does not support incoming FlowFiles triggering it, which means it can't be used with HandleHttpRequest/Response.

We had a similar request to what you would like to do and created this JIRA ticket:

https://issues.apache.org/jira/browse/NIFI-1784

If we implemented that ScanHBase processor as described in the ticket, then you could have a flow like

HandleHttpRequest -> ScanHBase -> HandleHttpResponse

-Bryan

Re: Insert HBase data to a HttpResponse

n3_apple — Tue, 21 Jun 2016 18:49:26 GMT

thank you very much for the fast answer. I will try to solve this problem by executing a script which get the data from the hbase table.