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


2018-05-17 17:36 GMT+08:00 Saeid Sattari <saeid.satt...@gmail.com>:

> 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:
> unlock_experimental_flags=true
> rpc_service_queue_length=15000
> rpc_acceptor_listen_backlog=1024
> The error:
>> WARNINGS: Unable to advance iterator: Timed out: Scan RPC to
>> timed out after 0.000s (SENT): Not found: Scanner not
>> found
> Any hints and tips are appreciated. Thank you in advance.
> Best,
> Saeid

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