Re: scan performance super bad

2018-05-17 Thread Andy Liu
>So it looks like you have a numeric value being stored here in the string >column. Are you sure that you are properly zero-padding when creating your >key? For example if you accidentally scan from "50_..." to "80_..." you >will end up scanning a huge portion of your table. i'm sure they are

Re: Kudu query error

2018-05-17 Thread Saeid Sattari
Hi Yao, Thanks. I will try it and let you know about the result. Regards, Saeid On Thu, May 17, 2018 at 4:09 PM, 徐瑶 wrote: > Hi Saeid, > > I think it may be had a long time interval between ScanRequest. > Setting the parameter --scanner_ttl_ms(default 60s) larger may solve

Re: Kudu query error

2018-05-17 Thread 徐瑶
Hi Saeid, I think it may be had a long time interval between ScanRequest. Setting the parameter --scanner_ttl_ms(default 60s) larger may solve the problem. Yao 2018-05-17 17:36 GMT+08:00 Saeid Sattari : > Hi all, > > Lately, I have a critical problem with Kudu cluster

Kudu query error

2018-05-17 Thread Saeid Sattari
Hi all, Lately, I have a critical problem with Kudu cluster (V1.6). For most of the queries submitted by Impala (even very simple and light one) regularly encountered with the following error. There are 120 datanode in my cluster and changed following parameters on datanodes: