Re: How many threads impala start for handling partitioned join?

Hello JJ, No, currently Impala uses one thread to execute the join (without regard for the amount of partitions that fit into memory). HTH On 25 October 2017 at 05:44, 俊杰陈 wrote: > Hi > > When Impala does a partitioned join on a node, it split the build input > into

Re: [VOTE] Graduate to a TLP

+1 On 18 October 2017 at 03:40, Tim Armstrong wrote: > +1 > > On 17 Oct. 2017 8:38 pm, "Alexander Behm" wrote: > >> +1 >> >> On Tue, Oct 17, 2017 at 8:18 PM, Taras Bobrovytsky >> wrote: >> >> > +1 >> > >> > On Tue, Oct 17,

Re: show create table return empty after change column name in hive

wrote: > I try to use ' invalidate metadata' for the whole catalog, But the modified > table is still empty. I am doubt the only way is restart catalogd. > > BTW, I test with the newest version(2.10.0) > > 2017-10-13 0:17 GMT+08:00 Jeszy <jes...@gmail.com>: > >> T

Re: Re: Load Data Parquet Table

; > > > At 2017-10-13 00:30:12, "Jeszy" <jes...@gmail.com> wrote: >>See the docs on LOAD DATA: >>http://impala.apache.org/docs/build/html/topics/impala_load_data.html >> >>"In the interest of speed, only limited error checking is done. If the >&

Re: Load Data Parquet Table

See the docs on LOAD DATA: http://impala.apache.org/docs/build/html/topics/impala_load_data.html "In the interest of speed, only limited error checking is done. If the loaded files have the wrong file format, different columns than the destination table, or other kind of mismatch, Impala does not

Re: show create table return empty after change column name in hive

This does sound like a bug. What version are you using? Do you see any errors in the catalog logs? I think a global invalidate metadata should work, and it's a bit less intrusive than a catalog restart. In general, it is a good idea to do all metadata operations from Impala if you are using Impala

Re: ColumnLineageGraph.java Compile Error in Frontend

Hello Quanlong, This is https://issues.apache.org/jira/browse/IMPALA-6009, there's already a fix (but see follow up talk on jira). HTH On 4 October 2017 at 01:53, 黄权隆 wrote: > Hi all, > > I encountered a compile error when I try to recompile impala yesterday. The >

Re: Re: Impala Driver Source Code

g/faq.html FWIW, you can use Hive's open source driver to connect to impala, but since it's not as widely used as Cloudera's drivers you may run into a few issues. On 19 September 2017 at 10:55, sky <x_h...@163.com> wrote: > Thank you Jeszy. > But doesn't impala provide an open-s

Re: Impala Driver Source Code

If you are referring to Cloudera's JDBC and ODBC connectors, unfortunately those are proprietary. On 18 September 2017 at 11:55, sky wrote: > Hi all, > Could you give me a impala driver source code connection?

Re: impala is not parallelized

3 15:02 GMT+08:00 孙清孟 <sqm2...@gmail.com>: > >> Hi Jeszy: >> Thanks for your reply. >> >> On another cluster with two instances, I do the same SQL, and the file >> size is smaller : >> >> F00:PLAN FRAGMENT [RANDOM] hosts=2 instances=2 >> WRITE TO

Re: impala is not parallelized

Putting some more files in the source table will allow you to use more hosts. On 3 August 2017 at 05:08, Taras Bobrovytsky wrote: > Yes, it looks like all the work is being done on a single node because > hosts=1. > > On Wed, Aug 2, 2017 at 7:55 PM, 孙清孟

Re: Slow/unusable apache JIRA?

Hey, No problems usually, but now It's down for me as well. According to status.apache.org, the service seems to be struggling. On 24 July 2017 at 18:15, Matthew Jacobs wrote: > Hey, > > I've been noticing a lot of slowness/timeouts on the Apache JIRA. Has > anyone else

Re: Re: Impala make install

With CM you can just add Impala as a new service to your cluster. Use the dropdown next to the cluster name. A binary version of impala is shipped as part of the CDH 5.11 parcels that you have installed. On 21 June 2017 at 11:58, 孙清孟 wrote: > Hi Tim, > I've built Impala

Re: big issue on retrieving 400MB data

Hey, It looks like all the time is spent waiting for the client to fetch the results: - ClientFetchWaitTimer: 17m31s Try doing: impala-shell -B -q '' HTH 2017-04-28 14:51 GMT+02:00 吴朱华 : > Maybe I just paste some main thing on mail , and congratulation on IPO > thing. >

Re: Is there any way to retrieve table metadata using select rather than show?

Hey, that's not possible from within impala. If you go directly to the HMS's backing DB, you can query that. What information are you looking for? Thanks. On Thu, Apr 6, 2017 at 3:02 PM, 吴朱华 wrote: > Hi guys: > > Currently, we are using "show databases","show tables" or