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80 discussions - 344 posts

  • Hi I was wondering if it is right to assume: 1. The first time we create a table in hive and load it followed by running the first query like Select * from Table1 will result in a MR job running and ...
    Sai SaiSai Sai
    Mar 4, 2013 at 8:31 am
    May 27, 2013 at 10:00 am
  • Hi team, What we have observed is, hive creates so many connections to metastore (mysql). This makes us change the numer of connections to mysql. Can anyone explain me how does hive manages its ...
    Siddharth TiwariSiddharth Tiwari
    Mar 19, 2013 at 1:25 am
    Jun 7, 2013 at 12:24 pm
  • Hi list, I've been using hive to perform queries on data hosted on AWS S3, and my tables point at data by specifying the directory in which the data is stored, eg $ create external table myData (str1 ...
    Tony BurtonTony Burton
    Mar 26, 2013 at 5:11 pm
    Mar 27, 2013 at 6:41 pm
  • Recently we tried to upgrade our hive from 0.9 to 0.10, but found some of our hive queries almost 7 times slow. One of such query consists multiple table outer join on the same key. By looking into ...
    WzcWzc
    Mar 24, 2013 at 5:04 am
    Jul 3, 2013 at 3:28 pm
  • Hello, We run M/R jobs to parse and process large and highly complex xml files into AVRO files. Then we build external Hive tables on top the parsed Avro files. The hive tables are partitioned by ...
    Sadananda HegdeSadananda Hegde
    Mar 29, 2013 at 9:58 pm
    Apr 16, 2013 at 3:14 pm
  • Hi, I have a question about HIVE-3675 NaN does not work correctly for round(n). The issue did solve the NaN problem, but the hql below result in a different display with hive0.10. I checked the code ...
    ChenchunChenchun
    Mar 14, 2013 at 7:44 am
    Apr 2, 2013 at 3:27 pm
  • We have existing log data in directories in the format of YEAR/MONTH/DAY. - How can we create a table over this table without hive modifying and/or moving it? - How can we tell Hive to partition this ...
    MarkMark
    Mar 29, 2013 at 5:20 pm
    Mar 29, 2013 at 8:38 pm
  • HI, I have a table BTTN in Oracle database having 738183 records:-- SQL select count(1) from bttn; COUNT(1) ---------- 738183 Now I want to import this table to HIVE and I have fired the following ...
    Ajit Kumar ShreevastavaAjit Kumar Shreevastava
    Mar 6, 2013 at 7:10 am
    Mar 16, 2013 at 10:57 pm
  • Hi, We have a 6 machine hive cluster. We are getting errors while a query is running and it fails. I found that on all 5 slaves storage is nearly full ( 96%, 98%, 100%, 97%, 98% storage used) . On my ...
    Chunky GuptaChunky Gupta
    Mar 18, 2013 at 10:38 am
    Mar 19, 2013 at 6:32 pm
  • while trying to create external table in oozie hive action, I am getting following error, hive version is 0.9.0 Caused by: javax.jdo.JDODataStoreException: Insert of object ...
    Abhishek GayakwadAbhishek Gayakwad
    Mar 9, 2013 at 8:01 pm
    Mar 12, 2013 at 8:45 am
  • Hi, I have a hive table which uses the jar file provided from the elephant-bird, which is a framework integrated between lzo and google protobuf data and hadoop/hive. If I use the hive command like ...
    Java8964 java8964Java8964 java8964
    Mar 7, 2013 at 10:48 pm
    Mar 9, 2013 at 5:58 pm
  • Hello, I was wondering if there is a way to quick-verify a Hive query before it is run against a big dataset? The tables I am querying against have millions of records, and I'd like to verify my Hive ...
    Kyle BKyle B
    Mar 5, 2013 at 6:45 pm
    Mar 8, 2013 at 11:30 am
  • Hi All, I am using the schema in the Impala VM and trying to create a dynamic partitioned table on date_dim. New table is called date_dim_i and schema for that is defined as: create table date_dim_i ...
    Dileep KumarDileep Kumar
    Mar 5, 2013 at 1:37 am
    Mar 6, 2013 at 10:09 am
  • On behalf of the Apache Hive PMC I am pleased to welcome Kevin Wilfong as a member of the Apache Hive PMC. Please join me in congratulating Kevin on his new role! Thanks. Carl
    Carl SteinbachCarl Steinbach
    Mar 4, 2013 at 7:55 pm
    Mar 5, 2013 at 6:25 am
  • Hi, Here is is a nice presentation from Owen from Hortonworks on "Optimizing hive queries" http://www.slideshare.net/oom65/optimize-hivequeriespptx Thanks, Nitin Pawar
    Nitin PawarNitin Pawar
    Mar 29, 2013 at 5:16 am
    Mar 29, 2013 at 6:54 am
  • i use sqoop to import 30GB data ( two table employee(aprox 21 GB) and salary(aprox 9GB ) into hadoop(Single Node) via hive. i run a sample query like SELECT ...
    Gobinda PaulGobinda Paul
    Mar 12, 2013 at 9:10 am
    Mar 12, 2013 at 11:55 am
  • Hi All, I am facing following issue while exporting table from hive to Oracle. Importing table from Oracle to Hive and HDFS is working fine. Please let me know where I lag. I am pasting my screen ...
    Ajit Kumar ShreevastavaAjit Kumar Shreevastava
    Mar 5, 2013 at 1:54 pm
    Mar 6, 2013 at 8:38 pm
  • Hi Everyone I'm trying to use the TABLESAMPLE function to sample data, however it's a little more complicated and I am having trouble getting it to run. I know that this works fine and it will give ...
    Robert LiRobert Li
    Mar 20, 2013 at 4:56 pm
    Mar 20, 2013 at 9:26 pm
  • Hi All, I have the following directory structure in hdfs /test/a/ /test/a/1.avro /test/a/2.avro /test/a/b/ /test/a/b/3.avro I created an external HIVE table using Avro Serde and added /test/a as a ...
    Suresh KrishnappaSuresh Krishnappa
    Mar 7, 2013 at 3:24 pm
    Mar 11, 2013 at 2:55 pm
  • Using CDH3u3 (Hive 0.7.1), it appears that variable substitution becomes disabled when I use a variable in a query that hasn't been defined. For instance, using the following script: set ...
    Matt TuckerMatt Tucker
    Mar 6, 2013 at 9:14 pm
    Mar 7, 2013 at 1:44 am
  • Hi, Does LEFT OUTER JOIN returns zero rows when RIGHT SIDE table doesn't have at least one record that matches JOIN condition in Hive? Regards, Kumar
    Kumar mrKumar mr
    Mar 1, 2013 at 8:14 pm
    Mar 5, 2013 at 12:44 am
  • I would like to remove unicode chars that are outside the Basic Multilingual Plane [1] I thought select regexp_replace(some_column,"[^\\u0000-\\uffff]","\ufffd") from my_table would work but while ...
    Tom HallTom Hall
    Mar 1, 2013 at 4:53 pm
    Mar 1, 2013 at 6:04 pm
  • Hi, Is there any function/method to find the maximum across a row in hive? Suppose i have a table like this: ColA ColB ColC 2 5 7 3 2 1 I want the function to return 7 1 Its urgently required. Any ...
    Sachin SudarshanaSachin Sudarshana
    Mar 1, 2013 at 4:47 pm
    Mar 1, 2013 at 5:50 pm
  • Hi, I'm running Hive 0.10 and I want to support HWI (besides CLI and HUE). When I started HWI I didn't get any error. However, when I went to <Hive Server Address :9999/hwi on my browser I saw the ...
    Eric ChuEric Chu
    Mar 30, 2013 at 2:45 am
    Aug 21, 2013 at 1:56 pm
  • I am trying to write a GenericUDF function to collect all of a specific struct field(s) within an array for each record, and return them in an array as well. I wrote the UDF (as below), and it seems ...
    Peter ChuPeter Chu
    Mar 28, 2013 at 9:17 pm
    Apr 5, 2013 at 6:44 pm
  • Hi all, I try inserting data into hive table storing by hbase storage handler but fail with the following exception end of mapreduce stage info. however, we didn't have problem accessing ...
    Jason ShihJason Shih
    Mar 27, 2013 at 8:26 pm
    Mar 28, 2013 at 3:52 am
  • Hi All, Can you please let me know how can I bypass this error. I am currently using Apache SQOOP version 1.4.2. [hadoop@NHCLT-PC44-2 sqoop-oper]$ sqoop export --connect ...
    Ajit Kumar ShreevastavaAjit Kumar Shreevastava
    Mar 13, 2013 at 1:43 pm
    Mar 20, 2013 at 7:32 am
  • Hi, We are trying to upgrade hive from 0.9.0 to 0.10.0 (apache). When we deploy the 0.10.0 binaries and start meta thrift server, we got the following error: hadoop@ip-10-4-106-145:~/hive$ ./bin/hive ...
    Shangzhong zhuShangzhong zhu
    Mar 14, 2013 at 8:51 am
    Mar 15, 2013 at 12:04 am
  • My understanding is that renaming and external table doesn't rename the corresponding HDFS directory to match. I would like to do this; I want to rename the table in Hive and also rename the HDFS ...
    Keith WileyKeith Wiley
    Mar 7, 2013 at 11:29 pm
    Mar 9, 2013 at 7:25 pm
  • Hi All, I am running a hive query which does insert into a table. What I noticed from the symptom it looks like it got to do with some settings but I am not able to figure out what settings. When I ...
    Dileep KumarDileep Kumar
    Mar 8, 2013 at 10:09 pm
    Mar 9, 2013 at 12:05 am
  • We have 5 nodes cluster(Hadoop 1.0.4), It hung a couple of times while running big hive jobs(hive-0.8.1). Basically all the nodes are dead, from that trasktracker's log looks it went into some kinds ...
    Daning WangDaning Wang
    Mar 6, 2013 at 8:08 pm
    Mar 7, 2013 at 1:28 am
  • Hi there, I've setup a virtual machine hosting Hive. My use case is a Web traffic analytics, hence most of requests are : - how many requests today ? - how many request today, grouped by country ? - ...
    Sékine CoulibalySékine Coulibaly
    Mar 4, 2013 at 10:34 pm
    Mar 6, 2013 at 4:03 pm
  • Hi, We use Hive "Insert Overwrite Directory" to copy the hourly logs to hdfs. So there are lots of directories like these: /my/logs/2013-03-08/01/000000_0 /my/logs/2013-03-08/02/000000_0 ...
    IanIan
    Mar 28, 2013 at 5:29 pm
    Mar 28, 2013 at 6:27 pm
  • ello, Is there a setting where all tables created will default to external? I know this isn't ideal long term but I am setting up the environment and would rather start with all tables being external ...
    Babe RuthBabe Ruth
    Mar 21, 2013 at 8:56 pm
    Mar 28, 2013 at 5:16 am
  • hello, about hsql statistics. table mytable date,uid,a,b,c -------------------- 03/13/13 185690475 0 1 1 03/13/13 187270278 0 1 0 03/13/13 185690475 1 1 0 03/13/13 186012530 1 0 1 03/13/13 180286243 ...
    周梦想周梦想
    Mar 27, 2013 at 3:34 am
    Mar 27, 2013 at 9:22 am
  • hive version:0.10.0 hive from testpoker select transform(ldate,ltime,threadid,gameid,userid,pid,roundbet,fold,allin,cardtype,cards,chipwon) using 'calcpoker.py' as ...
    周梦想周梦想
    Mar 26, 2013 at 9:55 am
    Mar 27, 2013 at 2:22 am
  • The following query translates into a many-map-single-reduce job (which is common) and also slags through the reduce stage...it's killing the overall query: select * from a where b = 'c' order by b ...
    Keith WileyKeith Wiley
    Mar 22, 2013 at 11:02 pm
    Mar 24, 2013 at 1:30 pm
  • Hi. I'm trying to understand what happens to Exceptions that are thrown by custom UDFs. I have a UDF that throws a RuntimeException with useful debugging information, but I don't see it in any logs ...
    Marc LimotteMarc Limotte
    Mar 20, 2013 at 8:02 pm
    Mar 21, 2013 at 8:17 am
  • Hi, I have the hadoop running in pseudo-distributed mode on my linux box. Right now I face a problem about a Hive, which throws Exception in a table for some data which used my custom SerDe and ...
    Java8964 java8964Java8964 java8964
    Mar 20, 2013 at 8:45 pm
    Mar 21, 2013 at 1:05 am
  • Good day, I wonder how much hive index helps, I had a test before seems it take long time to build index, hope to learn something from folks here that have good experience on it. thanks! echo
    Echo LiEcho Li
    Mar 19, 2013 at 6:15 pm
    Mar 19, 2013 at 6:47 pm
  • I have files like this: 03/11/13 10:59:52 00000ec0 1009 180538126 92041 2300 0 0 7 21|47|20|33|11 0:2775 03/11/13 10:59:52 00000744 1010 178343610 92042 350 1 0 -1 NULL NULL 22 45 the format is ...
    周梦想周梦想
    Mar 11, 2013 at 4:05 am
    Mar 18, 2013 at 3:27 pm
  • Hi all, I'm using the hive json serde and need to run: "ADD JAR /usr/lib/hive/lib/hive-json-serde-0.2.jar;", before I can use tables that require it. Is it possible to have this jar available ...
    Krishna RaoKrishna Rao
    Mar 13, 2013 at 5:27 pm
    Mar 13, 2013 at 5:55 pm
  • Hi All, Could anyone describe what the required thread safety for a UDF is? I understand that one is instantiated for each use of the function in an expression, but can there be multiple threads ...
    Shaun ClowesShaun Clowes
    Mar 11, 2013 at 3:13 am
    Mar 11, 2013 at 3:55 am
  • Hi All, I have a hadoop cluster with data present in large number of directories ( To run HIVE queries over this data I created an external partitioned table and pointed each directory as a partition ...
    Suresh KrishnappaSuresh Krishnappa
    Mar 7, 2013 at 2:31 pm
    Mar 9, 2013 at 5:53 pm
  • I have two tables which have overlapping but nonidentical schema. I want to creating a new table that unions them, leaving nulls in any given row where a column name doesn't occur in the other ...
    Keith WileyKeith Wiley
    Mar 6, 2013 at 6:03 pm
    Mar 6, 2013 at 6:44 pm
  • Hi, I am getting "java.io.FileNotFoundException(File does not exist: /tmp/sb25634/hive_2013-03-01_23-21-43_428_5325193042224363842/-mr-10000/1/emptyFile)' " exception when running any join query ...
    Bhaskar, SnehalataBhaskar, Snehalata
    Mar 3, 2013 at 5:53 pm
    Mar 4, 2013 at 2:32 pm
  • Hi Thejas, thank you for the explanation. So, HiveServer2 is going to be part of Hive 0.11, and I have read that HCatalog is going to be merged in version 0.11 too. What is the target date for Hive ...
    Rodrigo TrujilloRodrigo Trujillo
    Mar 21, 2013 at 5:53 pm
    Mar 22, 2013 at 10:36 pm
  • Hi fellow Hive users, Any of you know if there is a HUE user group? Thanks, Chalcy
    Chalcy RajaChalcy Raja
    Mar 22, 2013 at 7:13 pm
    Mar 22, 2013 at 7:38 pm
  • Hi team, What we have observed is, hive creates so many connections to metastore (mysql). This makes us change the numer of connections to mysql. Specifically 2 connections per user out of which one ...
    Siddharth TiwariSiddharth Tiwari
    Mar 21, 2013 at 2:44 pm
    Mar 21, 2013 at 2:50 pm
  • Hi, I'm using Hive for dealing with some international characters.Does Hive have collation support so I can specify case sensitivity, ascent sensitivity or width sensitity for string comparison ...
    Jon KleinJon Klein
    Mar 19, 2013 at 4:10 am
    Mar 20, 2013 at 4:25 pm
Mar 2013
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101 users for March 2013

Dean Wampler: 27 posts Sai Sai: 27 posts Nitin Pawar: 25 posts Sanjay Subramanian: 18 posts Mark Grover: 15 posts Ramki Palle: 13 posts Ajit Kumar Shreevastava: 11 posts Bejoy_ks: 7 posts Chenchun: 7 posts Jarek Jarcec Cecho: 7 posts Keith Wiley: 7 posts Dileep Kumar: 6 posts Jagat Singh: 6 posts Tony Burton: 6 posts 周梦想: 6 posts Abdelrhman Shettia: 5 posts Java8964 java8964: 5 posts Navis류승우: 5 posts Abhijeet gaikwad: 4 posts Chalcy Raja: 4 posts
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