rest - KairosDB in Java - using the client to delete high volumes of data -

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let me know if posted incorrectly, here. (note: kairosdb on top of cassandra. uses hector).

i'm using kairosdb java client dump large amounts of sample data datastore. dumped 6 million in, , attempting delete of method follows:

public static void purgedata(string metricstype, httpclient c, int num, timeunit units){     try {         system.out.println("beginning method");         c = new httpclient("http://localhost:8080/api/v1/datapoints/delete");         querybuilder builder = querybuilder.getinstance();         system.out.println("preparing delete info");         builder.setstart(20, timeunit.months).setend(1, timeunit.seconds).addmetric(metricstype);         system.out.println("attempted delete info");         queryresponse response = c.query(builder);         //system.out.println("json: " + response.getjson());      } catch (exception e) {         system.out.println("adding data points produced error");         e.printstacktrace();     } }

note removed time interval parameters try , delete of data @ once.

when executing method, no points seemingly deleted. opted curl query json form of data , received hectorexception stating "all host pools marked down. retry burden pushed out client".

my personal conclusion 6 million many delete @ once. thinking deleting pieces @ time, don't know how restrict how many rows delete kdb java client-side. know kairosdb used in production. how people delete large amounts of data java client?

thanks time!

you can use cqlsh or cassandra-cli truncate kairosdbs tables (data_points, row_key_index, string_index). not familiar enough kairosdb know if thats going cause issues or not though.

> truncate {your keyspace}.data_points;

it might take few seconds complete.


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