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52 discussions - 150 posts

  • Does Impala allow logging in with proxy users? For instance, if I kinit using <span class="m_body_email_addr" title="4e8fb772f3a4034906153f2d4258ee5c" abc@xyz.com</span , and then I log in to ...
    Rohan RRohan R
    Apr 16, 2014 at 4:03 am
    Apr 17, 2014 at 8:40 pm
  • Hi, I'm wondering if it's possible for impala (1.1.1) and hive (10.0, cdh 4.2.1) to create and access tables with multiple partitions having different file formats. This behavior is documented at ...
    Matt zMatt z
    Apr 1, 2014 at 5:17 pm
    Apr 2, 2014 at 11:50 pm
  • I'm having difficulties creating a function that reads 2 strings and returns a string. To illustrate the problem I've downloaded the https://github.com/cloudera/impala-udf-samples and added a new ...
    Toni CebriánToni Cebrián
    Apr 30, 2014 at 11:42 am
    May 7, 2014 at 9:47 am
  • Hello Experts! I am trying to develop a UDF which takes 1 line of input and outputs multiple lines after processing (one to many). After a bit of research I found that Hive has UDTF - User Defined ...
    Shrinath ParikhShrinath Parikh
    Apr 24, 2014 at 3:41 pm
    Apr 24, 2014 at 4:22 pm
  • Different functions then the following: Date and Time ...
    Apr 7, 2014 at 9:42 pm
    Apr 9, 2014 at 4:30 pm
  • Hi there, I recently upgraded our impala cluster to the newest release version 1.2.4, everything is fine except that when I select * from a sequence file formatted table, the impalad will crash at a ...
    Zesheng WuZesheng Wu
    Apr 29, 2014 at 1:38 pm
    May 6, 2014 at 1:48 am
  • Hi there, Our impala cluster occasionally reports an error which says "*This Impala daemon is not ready to accept user requests. Status: Waiting for catalog update from the StateStore*", but all the ...
    Zesheng WuZesheng Wu
    Apr 30, 2014 at 4:08 am
    May 4, 2014 at 10:07 pm
  • Also, in case this is an already solved bug, I'm on Impala 1.2.3 To unsubscribe from this group and stop receiving emails from it, send an email to impala-user+unsubscribe@cloudera.org.
    Keith SimmonsKeith Simmons
    Apr 11, 2014 at 9:53 pm
    Apr 20, 2014 at 4:44 am
  • Hi Impalans, I've been trying to understand why I'm seeing a certain behavior and whether or not I should be worried. In our warehouse we have a number of hourly partitioned tables that are produced ...
    Sean O'BrienSean O'Brien
    Apr 25, 2014 at 12:59 am
    May 28, 2014 at 8:55 pm
  • Hi Impala team, After upgrading Impala from 1.2.3 to latest version(git-hub master branch), the overall performance is improved noticeably. It's an amazing performance! I noticed that the ...
    Jung-Yup LeeJung-Yup Lee
    Apr 24, 2014 at 9:12 am
    Apr 29, 2014 at 9:26 am
  • I had a few questions to clarify interactions between different components of Impala, for better understanding. It would be great if someone can answer them: 1. Interaction between catalogd and Hive ...
    Hemanth YamijalaHemanth Yamijala
    Apr 21, 2014 at 1:20 pm
    Apr 21, 2014 at 3:26 pm
  • Using impala 1.2.1 and executing the following query: select cast(date_add("1970-01-01", request_date) as timestamp) + interval request_time seconds as new_date, request_date, request_time from ...
    Apr 7, 2014 at 9:48 pm
    Apr 8, 2014 at 8:20 pm
  • Trying to get LZO compression working on our AWS EMR system and I am encountering the following error after trying to install with the command "sudo yum install impala-lzo": Transaction check error ...
    Apr 1, 2014 at 11:56 pm
    Apr 2, 2014 at 12:54 pm
  • Dear,all: When I run the select * from table command ,The impala-shell command line was hangs. and the impalad.INFO log is I0425 16:59:25.371989 59679 Frontend.java:552] Missing tables were not ...
    Hongjie maHongjie ma
    Apr 25, 2014 at 10:02 am
    May 12, 2014 at 1:26 pm
  • Hi, We run into some Impala performance issue querying HBase tables. Where condition for a single key value works fine but multiple equals connected with OR translates to a full HBase scan with ...
    György BaloghGyörgy Balogh
    Apr 28, 2014 at 1:14 pm
    May 6, 2014 at 2:01 pm
  • Looks like I may have run into a bug due to an overzealous optimization. I'm using 1.2.4, so apologies if this has already been fixed. A query of the form: select val from foo group by foo order by ...
    Keith SimmonsKeith Simmons
    Apr 28, 2014 at 10:03 pm
    Apr 28, 2014 at 10:08 pm
  • What part specifically returns errors? The insert or the concurrent queries? I'm wondering two things: Could you clarify with specific statements how you would like this workflow to look? To ...
    Marcel KornackerMarcel Kornacker
    Apr 26, 2014 at 6:06 pm
    Apr 28, 2014 at 10:07 pm
  • I see that computing stats on hbase tables underlying hive tables are much faster than hive tables backed by avro files. I wonder why this is? Also, when I do a show table stats on a hbase table, it ...
    Benjamin KimBenjamin Kim
    Apr 21, 2014 at 6:43 pm
    Apr 21, 2014 at 8:50 pm
  • Hello, We need to store data coming from various datasources (As small files approx 2 million per day) at regular intervals, need to partition data by datasource and day and also each file can be ...
    Apr 15, 2014 at 1:19 pm
    Apr 19, 2014 at 1:23 am
  • Hi Skye, The library contains SumOfSquaresUpdate function. nm -C libudasample.so | grep SumOfSquaresUpdate 0000000000002857 T SumOfSquaresUpdate(impala_udf::FunctionContext*, impala_udf::BigIntVal ...
    Impala explorerImpala explorer
    Apr 2, 2014 at 1:18 am
    Apr 3, 2014 at 6:26 pm
  • There's an issue being tracked currently to add support for multiple count(distinct col) selections. https://issues.cloudera.org/browse/IMPALA-110 Basically, you can't currently write an Impala query ...
    Apr 2, 2014 at 5:40 pm
    Apr 2, 2014 at 6:29 pm
  • I'm trying to create my first Impala UDF in C++ and I wanted to use Boost.Regex that only comes as a shared library. Is there any workaround for using UDFs that use third party shared libraries? ...
    Toni CebriánToni Cebrián
    Apr 29, 2014 at 2:35 pm
    Apr 29, 2014 at 8:24 pm
  • Hi: I noticed that when Impala reads Parquet file, it ignores splits whose offset are not 0. Whereas ParquetMR are reading all splits. I understand the reason is that Impala reads the whole file ...
    Xiu GuoXiu Guo
    Apr 23, 2014 at 9:17 pm
    Apr 28, 2014 at 7:20 pm
  • HI Alex I also Opened a bug report it is IMPALA-961. I do the insert from HUE Using the Impala GUI. There is also another user reporting a similar issue ...
    Apr 25, 2014 at 10:28 pm
    Apr 25, 2014 at 10:33 pm
  • Is this a known issue with impala jdbc driver? http://stackoverflow.com/questions/21290298/specifying-database-other-than-default-with-impala-jdbc-driver I am using CDH 5 parcel/impala 1.3.0 and ...
    Sukhendu chakrabortySukhendu chakraborty
    Apr 24, 2014 at 2:41 am
    Apr 25, 2014 at 6:05 pm
  • We have enabled sentry for both impala and hive through hue in cdh 5/impala 1.3.0. Now, a user creating a table in hive does not have enough privileges to do invalidate metadata in impala and hence ...
    Sukhendu chakrabortySukhendu chakraborty
    Apr 24, 2014 at 5:52 am
    Apr 24, 2014 at 3:14 pm
  • Dear Impala Users, Does impala support efficient batch insert using jdbc? From documentation I've read that INSERT ... VALUES is not efficient for large quantities of data. Is it true that only way ...
    Arkadiusz BiczArkadiusz Bicz
    Apr 23, 2014 at 1:50 pm
    Apr 23, 2014 at 2:47 pm
  • I'm looking for examples of queries with a where clause condition similiar to: select ipaddr, count(ipaddr), uri from tableA where year=2014 and month=2 and day=12 and uriContains("abcd") Group By ...
    John MezaJohn Meza
    Apr 20, 2014 at 3:51 am
    Apr 21, 2014 at 5:39 am
  • Hi, I am trying to use the Queries feature in CM, for any given search string I am getting the following error. A server error has occurred. Send the following information to Cloudera. *Path ...
    Aveek MukherjeeAveek Mukherjee
    Apr 20, 2014 at 6:48 am
    Apr 20, 2014 at 6:24 pm
  • hey,i have the same problem,have you sloved it? thank you! 在 2013年4月30日星期二UTC+8下午2时15分04秒,Sigehere写道: To unsubscribe from this group and stop receiving emails from it, send an email to ...
    Apr 14, 2014 at 1:29 am
    Apr 16, 2014 at 3:51 am
  • Hello I've heard that Impala 1.3.0 has been released. And becuase I am running Gentoo linux, I have no way but building Impala from source to run on my system But, I cannot find where it is , I have ...
    Apr 8, 2014 at 12:53 pm
    Apr 14, 2014 at 7:59 pm
  • Hi folks, is it fair to assume that Hive SerDes are not supported by Impala as a whole owing to performance issues (i.e. scanning via this approach is undesirable)? I have a Hive created table that ...
    Soam AcharyaSoam Acharya
    Apr 9, 2014 at 4:05 am
    Apr 9, 2014 at 4:32 am
  • I ran some simple tests on regexp_extract/regexp_replace/rlike using 1.2.2 and compared the result with HIVE 0.12. Some queries have different results than HIVE returned. I wonder if there are ...
    Apr 8, 2014 at 4:18 pm
    Apr 8, 2014 at 11:53 pm
  • Hey, When impala version 1.3 will be implemented? Will include analytic function? 10x! Carmit To unsubscribe from this group and stop receiving emails from it, send an email to ...
    Apr 8, 2014 at 11:06 am
    Apr 8, 2014 at 5:19 pm
  • Your questions are more suited for parquet-dev. I'd take a look at this repo https://github.com/Parquet/parquet-mr.<https://github.com/Parquet/parquet-mr <https://github.com/Parquet/parquet-mr ...
    Nong LiNong Li
    Apr 28, 2014 at 7:13 pm
    Apr 28, 2014 at 7:13 pm
  • Hi Zesheng - That file has been removed in the most recent versions of Impala (note that README no longer exists on the master branch). It does refer to an internal Cloudera wiki, but it contains a ...
    Henry RobinsonHenry Robinson
    Apr 28, 2014 at 3:44 pm
    Apr 28, 2014 at 3:44 pm
  • Hi Ashish - Can you check that your Namenode is running on <namenode hostname ? Connection refused errors usually mean that there's nothing actually listening on the other side. You could try hadoop ...
    Henry RobinsonHenry Robinson
    Apr 23, 2014 at 6:58 pm
    Apr 23, 2014 at 6:58 pm
  • Dear CDH, Cloudera Manager, Cloudera Search and Cloudera Impala users, We are pleased to announce the general availability of the Cloudera QuickStart VM for Cloudera Enterprise 5.0. This VM contains ...
    Wendy TurnerWendy Turner
    Apr 21, 2014 at 10:32 pm
    Apr 21, 2014 at 10:32 pm
  • Hi users, Last week, we announced Cloudera Live<http://www.cloudera.com/content/cloudera/en/products-and-services/cloudera-live.html , a new online service for developers and analysts (currently in ...
    Justin KestelynJustin Kestelyn
    Apr 21, 2014 at 3:53 pm
    Apr 21, 2014 at 3:53 pm
  • I don't have much experience with HDF5. What would your Parquet schema look like? My impression is that there isn't a good C/C++ API for Parquet at the moment. For now (and possibly for a while), ...
    Uri LasersonUri Laserson
    Apr 18, 2014 at 10:40 pm
    Apr 18, 2014 at 10:40 pm
  • I have been experimenting with Impala recently. I can confirm that It is as fast as advertised and works well for ad-hoc analytics queries. Now I am considering to expand the use of Impala beyond ...
    Apr 15, 2014 at 8:51 am
    Apr 15, 2014 at 8:51 am
  • -cgroup_hierarchy_path:the value of this parameter is just a norman path? do i need to set cgroup by myself? i install cdh5 by hadoop-2.3.0.cdh5.tar.gz. YARN_POOL :must i set this parameter? how to ...
    Apr 15, 2014 at 7:09 am
    Apr 15, 2014 at 7:09 am
  • Hi, I'm not aware of the whole picture of your project and your use case, but before you dig into Thrift, if I were you, I'd first check if ODBC could be the most straightforward way to achieve ...
    Sékine CoulibalySékine Coulibaly
    Apr 12, 2014 at 9:31 pm
    Apr 12, 2014 at 9:31 pm
  • If you're using Impala to write the Parquet files, you can set the PARQUET_FILE_SIZE query option before running your insert statements. To unsubscribe from this group and stop receiving emails from ...
    Skye Wanderman-MilneSkye Wanderman-Milne
    Apr 9, 2014 at 5:48 pm
    Apr 9, 2014 at 5:48 pm
  • To unsubscribe from this group and stop receiving emails from it, send an email to impala-user+unsubscribe@cloudera.org.
    Apr 9, 2014 at 5:44 pm
    Apr 9, 2014 at 5:44 pm
  • Thanks Henry. Best, Anagha To unsubscribe from this group and stop receiving emails from it, send an email to impala-user+unsubscribe@cloudera.org.
    Apr 9, 2014 at 4:57 pm
    Apr 9, 2014 at 4:57 pm
  • Hi folks, I have a impala table A and it has a 'name' column which is STRING type. I'm trying to do a query to get all the names containing '\', the query below works: select * from A where A.name ...
    Apr 8, 2014 at 6:03 pm
    Apr 8, 2014 at 6:03 pm
  • Thanks Bro...that was might stupid of me ! regards sanjay To unsubscribe from this group and stop receiving emails from it, send an email to impala-user+unsubscribe@cloudera.org.
    Sanjay SubramanianSanjay Subramanian
    Apr 7, 2014 at 1:21 am
    Apr 7, 2014 at 1:21 am
  • we use impalad 1.3.0 on Cloudera CDH 5.0.0 GA (impalad version cdh5-1.3.0 RELEASE) the memory usage of impala daemon is always very high after finishing some complicated queries. i checked the mem ...
    Teng QiuTeng Qiu
    Apr 4, 2014 at 7:15 pm
    Apr 4, 2014 at 7:15 pm
  • Can you verify that the Impala Catalog Server has started successfully? Thanks, Lenni To unsubscribe from this group and stop receiving emails from it, send an email to ...
    Lenni KuffLenni Kuff
    Apr 3, 2014 at 4:33 pm
    Apr 3, 2014 at 4:33 pm
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56 users for April 2014

Sudharshan Ramakumar: 11 posts Henry Robinson: 10 posts Marcel Kornacker: 8 posts Matthew Jacobs: 7 posts Nong Li: 7 posts Ryan Despain: 7 posts Alex Behm: 6 posts Rohan R: 6 posts Indra: 4 posts Qiffang33: 3 posts Alan Choi: 3 posts Arkadiusz Bicz: 3 posts Darren Lo: 3 posts Jung-Yup Lee: 3 posts Keith Simmons: 3 posts Keith Simmons: 3 posts Lenni Kuff: 3 posts Matt z: 3 posts Ricky Saltzer: 3 posts Shrinath Parikh: 3 posts
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