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From Jim Apple <jbap...@cloudera.com>
Subject Re: big issue on retrieving 400MB data
Date Fri, 28 Apr 2017 11:44:14 GMT
dev@ does not appear to accept attachments. You can upload it somewhere and
post a link, though.

On Thu, Apr 27, 2017 at 11:35 PM, 吴朱华 <ikewu83@gmail.com> wrote:

> Oops, I just resend it, you know the chinese network^_^
>
> 2017-04-28 14:20 GMT+08:00 Mostafa Mokhtar <mmokhtar@cloudera.com>:
>
>> Btw the profile wasn't attached.
>> Please resend.
>>
>> On Thu, Apr 27, 2017 at 11:11 PM, 吴朱华 <ikewu83@gmail.com> wrote:
>>
>>> Profile is in the attachment, thanks
>>>
>>>
>>> 2017-04-28 13:10 GMT+08:00 Dimitris Tsirogiannis <
>>> dtsirogiannis@cloudera.com>:
>>>
>>>> Maybe you also want to post some information about the schema (how wide
>>>> your table is, does it use nested types, etc) as well as the profile of
>>>> the
>>>> slow query.
>>>>
>>>> Dimitris
>>>>
>>>> On Thu, Apr 27, 2017 at 9:30 PM, 吴朱华 <ikewu83@gmail.com> wrote:
>>>>
>>>> > Hi guys:
>>>> > we can facing a big issue when select * from a big table.
>>>> > The performance is 17minutes for retrieving 400MB data. Even slow
>>>> under
>>>> > JDBC situation.
>>>> > Is there anyway to improve it?^_^
>>>> >
>>>>
>>>
>>>
>>
>

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