tpch | Port of TPC-H dbgen to Java

 by   prestosql Java Version: 1.0 License: No License

kandi X-RAY | tpch Summary

kandi X-RAY | tpch Summary

tpch is a Java library. tpch has no bugs, it has no vulnerabilities, it has build file available and it has low support. You can download it from GitHub, Maven.

Port of TPC-H dbgen to Java

            kandi-support Support

              tpch has a low active ecosystem.
              It has 31 star(s) with 32 fork(s). There are 16 watchers for this library.
              It had no major release in the last 12 months.
              There are 4 open issues and 4 have been closed. On average issues are closed in 26 days. There are 3 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of tpch is 1.0

            kandi-Quality Quality

              tpch has 0 bugs and 0 code smells.

            kandi-Security Security

              tpch has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              tpch code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              tpch does not have a standard license declared.
              Check the repository for any license declaration and review the terms closely.
              Without a license, all rights are reserved, and you cannot use the library in your applications.

            kandi-Reuse Reuse

              tpch releases are not available. You will need to build from source code and install.
              Deployable package is available in Maven.
              Build file is available. You can build the component from source.
              tpch saves you 2132 person hours of effort in developing the same functionality from scratch.
              It has 4673 lines of code, 422 functions and 58 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed tpch and discovered the below as its top functions. This is intended to give you an instant insight into tpch implemented functionality, and help decide if they suit your requirements.
            • Loads defaults
            • Loads a distribution from the given lines
            • Load a list of distributions
            • Returns true if the given statement is an end statement
            • Generates a sentence
            • Generates a noun phrase
            • Generates a verb phrase
            • Create a list of date strings
            • Returns the Julian date in Julian year
            • Constructs a date from the given index
            • Generates a random sentence
            • Generates a random verb phrase
            • Returns the next value
            • Generate a random value
            • Returns true if this instance has the same precision
            Get all kandi verified functions for this library.

            tpch Key Features

            No Key Features are available at this moment for tpch.

            tpch Examples and Code Snippets

            No Code Snippets are available at this moment for tpch.

            Community Discussions


            Error while running hive tpch-setup: java.lang.IllegalAccessError: class org.apache.hadoop.hdfs.web.HftpFileSystem cannot access its superinterface
            Asked 2022-Feb-24 at 14:17

            I am trying to run hive tpcdh by following the instruction from . I am running into the following error. This issue is not seen for tpcds-setup.

            This is not working on CDP Trial 7.3.1, CDH Version: Cloudera Enterprise 6.3.4 but working on Apache Ambari Version



            Answered 2022-Feb-24 at 14:17

            In hive-testbench/tpch-gen/pom.xml, changed the hadoop version and the issue got resolved



            Why does the decorrelated query not produce expected result?
            Asked 2021-Nov-09 at 22:29

            I am trying to decorrelate this correlated query:



            Answered 2021-Nov-09 at 22:29

            To make those queries equivalent you need to use the join condition c1.c_mktsegment=c2.c_mktsegment for every row. By making it part of the OR, you are joining every row of c1 where c1.c_mktsegment = 'AUTOMOBILE' to every row of c2 regardless of what c2.c_mkrsegment is.

            I believe this is what you want:



            PL/SQL Block Finding number of suppliers for each nation
            Asked 2021-Nov-09 at 13:23

            I'm still new to PLSQL and am currently using TPCH Dataset to practice. I have been trying this for a while not but I can't seem to wrap my head around it and could use some advice. A rough overview of the dataset here.

            Here is my code so far



            Answered 2021-Nov-09 at 13:22

            Just remove INTO. It is required in PL/SQL, but not when select is part of a cursor (in your case, that's a cursor FOR loop).

            Also, you'd then reference countNationkey with cursor variable's name (QROW.countNationkey), which also means that you don't need a local variable.




            Apache Flink - Mount Volume to Job Pod
            Asked 2021-Jun-03 at 14:34

            I am using the WordCountProg from the tutorial on . The code is as follows:




            Answered 2021-Jun-03 at 14:34

            If using minikube you need to first mount the volume using



            Is this a valid PERCENTILE_CONT SQL query?
            Asked 2021-Jun-01 at 21:28

            I am trying to run a SQL query to find a 50th percentile in a table within a certain group, but then i am also grouping the result over the same field. Here is my query, for example over the tpch's nation table:



            Answered 2021-Jun-01 at 21:28

            You would use percentile_cont() to get a percentage of some ordered value. For instance, if you had a population column for the region, then you would calculate the median population as:



            AWS Oracle RDS DATA_PUMP_DIR clean up
            Asked 2021-Jan-09 at 14:34

            So I am trying to clean up the DATA_PUMP_DIR with the function


            as is described in the documentation:

            But the problem is that EXEC command is not recognized. ORA-00900: invalid SQL statement.

            I have tried writing execute instead or writing begin ... end function but still this wouldn't work. Could there be some permission issues? If so how can I grant them to myself?

            I am using oracle se2 12.1.

            Edit: I have tried running:



            Answered 2021-Jan-09 at 14:34

            In the end I just installed sqlplus and ran the command from there



            Json column as key in kafka producer and push in different partitions on the basis of key
            Asked 2020-Dec-22 at 19:41

            As we know , we can send a key with kafka producer which is hashed internally to find which partition in topic data goes to. I have a producer , where in I am sending a data in JSON format.



            Answered 2020-Dec-22 at 19:41

            it stored all the data in partition-0

            That doesn't mean it's not working. Just means that the hashes of the keys ended up in the same partition.

            If you want to override the default partitioner, you need to define your own Partitioner class to parse the message and assign the appropriate partition, then set partitioner.class in the Producer properties

            I want all unique key(deviceID) will store in different partition

            Then you would have to know your compete dataset ahead of time to create N partitions for N devices. And what happens when you add a completely new device?



            How we can Dump kafka topic into presto
            Asked 2020-Dec-18 at 05:10

            I need to pushing a JSON file into a Kafka topic, connecting the topic in presto and structuring the JSON data into a queryable table.

            I am following this tutorial

            I am not able to understand how this command will work.

            $ ./kafka-tpch load --brokers localhost:9092 --prefix tpch. --tpch-type tiny

            Suppose I have created test topic in kafka using producer. How will tpch file will generate of this topic?



            Answered 2020-Dec-18 at 05:10

            If you already have a topic, you should skip to step 3 where it actually sets up the topics to query via Presto

            kafka-tpch load creates new topics with the specified prefix



            Why I cannot read files from a shared PersistentVolumeClaim between containers in Kubernetes?
            Asked 2020-Sep-28 at 04:23

            I have a docker image felipeogutierrez/tpch-dbgen that I build using docker-compose and I push it to docker-hub registry using travis-CI.



            Answered 2020-Sep-22 at 11:28

            Docker has an unusual feature where, under some specific circumstances, it will populate a newly created volume from the image. You should not rely on this functionality, since it completely ignores updates in the underlying images and it doesn't work on Kubernetes.

            In your Kubernetes setup, you create a new empty PersistentVolumeClaim, and then mount this over your actual data in both the init and main containers. As with all Unix mounts, this hides the data that was previously in that directory. Nothing causes data to get copied into that volume. This works the same way as every other kind of mount, except the Docker named-volume mount: you'll see the same behavior if you change your Compose setup to do a host bind mount, or if you play around with your local development system using a USB drive as a "volume".

            You need to make your init container (or something else) explicitly copy data into the directory. For example:



            How to configure in Kubernetes a static hostname of multiple replicas of Flink TaskManagers Deployment and fetch it in a Prometheus ConfigMap?
            Asked 2020-Sep-24 at 11:02

            I have a flink JobManager with only one TaskManager running on top of Kubernetes. For this I use a Service and a Deployment for the TaskManager with replicas: 1.



            Answered 2020-Sep-24 at 11:02

            I got to put it to work based on this answer and the documentation. The first thing is that I had to use StatefulSet instead of Deployment. With this I can set the Pod IP to be stateful. Something that was not clear is that I had to set the Service to use clusterIP: None instead of type: ClusterIP. So here is my service:


            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install tpch

            You can download it from GitHub, Maven.
            You can use tpch like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the tpch component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer For Gradle installation, please refer .


            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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