Member since
07-05-2018
12
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07-27-2018
01:59 PM
thank you for the solution, i have a sql query which has group by roll up clause and it goes like following. from tablename group by rollup(decode(-----some expression here-----),decode(some expression here),decode (some expression here)) as i said i have to modify the query where the query work on kudu using impala shell, when i performed the query i got the follwing exception, ERROR: AnalysisException: default.rollup() unknown please help me with what has to be done in this case thank you
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07-24-2018
07:16 AM
i am trying to translate the query which is in sql working on oracle. the query goes like this, select MAX(NANVL(Column name,0)) OVER (partition by x, y) as z from table name I would like to do the same using impala-shell on kudu-table because when i performed i got the following exception ERROR: AnalysisException: default.nanvl() unknown Thanks in advance
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Apache Impala
07-17-2018
05:33 AM
thank you again for the solution.I found a java code which loads data into kudu table from csv. is it efficient.?
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07-16-2018
06:06 AM
Sorry,if i am asking too many doubts. I have a big table in oracle, is it possible if i can save the file locally in my system and insert in the kudu table. Thank you for all your solution
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07-13-2018
06:45 AM
Thank you for the solution. I am currently using impala-shella for performing various queries. complex queries using all functions and noting down the timestamp,that is how long it takes to get all the data from a table which has more than a million records. I want to perfrom the sample using java kudu Api and benchmark the queries,that is see how long a query perfromed in java kudu Api. I want to come up with a comparison between query perfromed in impala-shell and java side,so tell me how to perfrom queries from the java-side
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07-12-2018
05:39 AM
I would like to run the queries and benchmark them using java, hows can i do that
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07-10-2018
01:48 PM
thank you but i just want to use java and do batch insert,is tere any way to perfrom faster writes on kudu table using java
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07-10-2018
01:46 PM
I have a kudu table with more than a million records, i have been asked to do some query performance test through both impala-shell and also java. Through impala-shell i am able to perform all the queries and it gives me the timestamp through which i get to know the time taken for running the query,but whne it comes to perfrom queries using java api kudu,is it possible if i can perform join query operation using java api kudu and benchmark the logs
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Apache Impala
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Apache Kudu
07-05-2018
10:18 AM
if i do the writes as per the program given in https://github.com/cloudera/kudu-examples/tree/master/java/java-sample/src/main/java/org/kududb/examples/sample it takes an hour to insert the data in kudu table. How can i insert the records in lesser time
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