Find hive table location. For example: I have a temporary table t1.

Find hive table location select a. Method 1: a) Get the location of the HDFS folder for the Hive external table. The ownership of the Hive table file is a factor in determining table types and ACID operations I am creating an external table using Hive shell and loading some data in it. external. By default, Hive assumes external tables reside in the external tablespace. util. id, a. For that you have use JDBC connection to connect to The only way for me to get data into the newly defined external table is through an ALTER TABLE ADD PARTITION statement, for example: ALTER TABLE master_test ADD PARTITION How to get hive table name based on HDFS location path? with out connecting to metastore. 0 we have used Hortonwork's spark-llap library to write structured streaming DataFrame from Spark to Hive. We need to have HDFS path(or other compatible data source) in order to create a By going through the internet about external tables and managed table, I understood that we need to specify the Location while creating the external table as hive will Table type definitions and a diagram of the relationship of table types to ACID properties clarifies Hive tables. On GitHub you will find some As per this documentationwhen you create a table registered to hive_metastore then the location it will store is in dbfs location path /user/hive/warehouse. Learn more about The cheapest way to get the locations of the partitions of a table is to use the GetPartitions call from the Glue API. SparkContext import org. However, the hive tables and data Let's take an example: you want to have a partitioned hive table with three columns (id INT, fname STRING, dt STRING, lname STRING) where id, fname, lname are columns that How to retrieve Hive table Partition Location? 2. The location of a table depends on the table type. What I want is create an external Connect and share knowledge within a single location that is structured and easy to search. Partition file not creating for new Yes you can change the hudi table location and you will also need to change the location path of the table in glue manually (for example thru the aws console or by using the Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Is there a way to retrieve hdfs location of a hive table using Java jdbc. -name "*. In most cases it is in MySQL or Postgres. xml. spark. SparkConf Hi, When creating Hive table with LOCATION clause, the location is transformed to the full URI: hive> create table a1 (i int) location 'hdfs:/tmp/a1'; Describing the table, the Based on the Hive doc below: Rename Table ALTER TABLE table_name RENAME TO new_table_name; This statement lets you change the name of a table to a In Cloudera Manager, when you launch your cluster, you accept default or specify other Hive metastore variables hive. Hive metastore properties when you create database without using location like create database talent,it will create in by default location /user/hive/warehouse in hdfs. Free Courses; Learning Paths; GenAI Pinnacle Program then Hive will delete both the On HDP 3. However, Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Assuming that your real goal is to restrict execution of unbounded queries, I think it would be easier to get query's execution plan and look under its FileScan / HiveTableScan leaf nodes to see if any partition filters are being Connect and share knowledge within a single location that is structured and easy to search. New tables that you create in CDP are stored in either the Hive warehouse for managed tables or the Hive warehouse for external Unlike traditional RDBMS, Hive metadata is stored in a separate database. 1. g. To determine the managed or external table We'll look at how to get the table's storage location in this article. . hadoop. sql. First login to Hive metastore and use the database which is storing all hive I have created a hive table and trying to locate where hive have created an hdfs file for this table locally. OR. But when I run a select query to Cant connect from postgresql server to hive databases on remote server. The location clause must point only to any HDFS location then only we will be able to enjoy the benefits of hadoop it will change after table altered. hdfs dfs -du -h <location of table> After that, you can change it to a new location and repair the hive table to create a new partition under the new location (The partition column name in new location must be the hive. change default location when creating an This article provides the SQL to list table or partition locations from Hive Metastore. The uses of SCHEMA and Hive Tables. ALTER TABLE <table_name> SET LOCATION "hdfs://file_path_in_HDFS"; HDFS: is value against fs. 14. You can use left join or full join for find different records from both tables. New tables that you create in CDP are stored in either the Hive warehouse for managed tables I hit a hard block when using hive table. You might choose a table type based on its supported storage format. So you can create a subdirectory under ml-100k/ and use it like this : Create external table hive, Hive Managed Table vs External Table : LOCATION directory 1 Where to find the location of hive database when i am giving the location? Connect and share knowledge within a single location that is structured and easy to search. Tried using the following queries but doenst work. These are non partitioned tables. 1, Check the external location in ApplicationMaster: User class threw exception: org. In other words, if the data is You can add additional clusters to the Custom Metastore for Azure Portal as well as from Ambari configurations ( Hive -->Advanced). "TBLS" stores the information of Hive tables. We will demonstrate this We will show you different way on how you can get detailed information about your Hive tables, including the column names, the data types, the create statement, the location of Hive stores tables files by default at /user/hive/warehouse location on HDFS file system. Hive external table with location. As far as I know there is no direct command to know all the tables of type external/internal. After this the hive directories couldn't be found on the HDFS path. name from TGT Following is a simple code that is trying to create a HIVE table:: import java. Lets identify the type of Apache Hive tables and the key difference between them. Since we maintain different location for Long story short: the location of a hive managed table is just metadata, if you update it hive will not find its data anymore. The location of the DESCRIBE|DESC DATABASE shows the name of the database, its comment (if one has been set), and its root location on the filesystem. "PARTITIONS" stores the information of Hive In CDP Public Cloud, you specify the location of managed tables and external table metadata in the Hive warehouse during Data Warehouse setup. DBFS uses the Connect and share knowledge within a single location that is structured and easy to search. CREATE EXTERNAL TABLE IF NOT EXISTS db_name. 8. 2. defaultFS property in core-site. The following table compares Hive table types and ACID operations before and after upgrading. when running query, I'm new to Hive. However, Database name,Table name,Table Type(External) and HDFS Location of hive External tables. When I I need to read / write tables stored in remote Hive Server from Pyspark. 0. hdfs://user/temp3 . dir and hive. Though we can write Scripts and execute Hive queries to retrieve the information of all the S3 data bucket location for each hive table, one quick alternative for the I have a Hive table which has ip address. hql or vi You cannot create a Hive table over a specific file, you need to give a directory. now i want to change the default location of the table to non hdfs location i tried the below command but not working ALTER TABLE my_table As we know 'msck repair' command add partitions based on directory, So first drop all partitions . 1 Hive - How to query a table to get its own I've got S3 access logs getting dumped to a bucket in what's apparently a Hive (Glue Data Catalog) unfriendly structure. You can see in hdfs by using Also, right after installing Hive-on-Tez, you might also want to change the warehouse location. AnalysisException: Table or view not found: "DB_X". 1 Internal or Managed Table. 1. New tables that you create in CDP are stored in either the Hive warehouse for managed tables Also, right after installing Hive-on-Tez, you might also want to change the warehouse location. my_table; However, while this does move the table's location, the table is Also, right after installing Hive-on-Tez, you might also want to change the warehouse location. The metastore database details can be found in hive That's an extention of Mantej Singh's answer: you can use pyspark to find tables across all Hive databases (not just one): from functools import reduce from pyspark import ALTER TABLE db. However, I have a hive external table point to a location on s3. The default location for Hive managed tables is the hive warehouse. Assuming if I created a 10 tables,is there any system table in I have an external table created in hive with default location CREATE EXTERNAL TABLE `testtable`( `id` int, `name` string) ROW FORMAT DELIMITED FIELDS TERMINATED Table or view not found. Learn more about Teams Get early access and see previews of new features. Learn We know that Apache Spark is a general-purpose big data processing engine. my_table SET LOCATION '/some_loc'; followed by. HiveMetaStoreClient Table type definitions and a diagram of the relationship of table types to ACID properties clarifies Hive tables. 0 Get filename of Record in Hive. xml, the context automatically creates metastore_db in the current directory and creates a I am trying to create a Hive external table that points to an S3 output file. hive" -ls. exec. Please find below view definition: A VIEW statement lets you Hive Tables. By default, Hive creates an Internal table also known as the Managed table, In the managed table, Hive owns the Hive Tables. Env: Hive metastore 0. but when I run show tables; under hive console , I can see that table and can run Select * from test. You need to create these directories on HDFS before you use Hive. Now even after running MSCK repair The reason that Hive cannot create external table on local file is because when Hive processes data, the actual processing happens on the Hadoop cluster where your local file Connect and share knowledge within a single location that is structured and easy to search. New tables that you create in CDP are stored in either the Hive warehouse for managed tables Insert data into s3 table and when the insert is complete the directory will have a csv file. You can try it out using How to retrieve Hive table Partition Location? 6. Hot Network Questions How are the On hive terminal run below command. at location '/user/tables_list/t1'; I want to retrieve this Yet another option is to communicate with Hive Metastore via Thrift protocol. I've created a database in Hive and by default the database is created in Hive warehouse. The Hive version is 2. Since Hive is the source of truth for what files it reads, I want to get the locations for the My external Hive table, created using Parquet, points at /hdfs/nodes for it's location, but it doesn't update to include the data in the new files after I rerun the program. dir Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Simple answer: no, the location of a Hive external table during creation has to be unique, this is needed by the metastore to understand where your table lives. As h4ck3r mentioned, you could use the "Show create table" command to look for location information. Properties import org. dir In your example, you're inserting into an empty external table, but one use case is to create the table pointing to a location where data resides. For example: I have a temporary table t1. You Initially I create a Hive external table following location . 2. External tables may be stored at a different location. I submit the application like so: This states the location of Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Finally, a possible compromise would be a SQL Select on the appropriate MySQL table, to generate (with regexp_replace()) a chain of ALTER Table/Partition LOCATION In Cloudera Manager, when you launch your cluster, you accept default or specify other Hive metastore variables hive. This is done directly from In Cloudera Manager, when you launch your cluster, you accept default or specify other Hive metastore variables hive. When you create an external (unmanaged) table, Hive keeps the data in the directory specified by the LOCATION keyword intact. hive> desc formatted mytable; b) Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about 3. It means that I have a file A in a folder and another file B in another folder. You do need to physically move the data on hdfs My understanding of HIVE-1537 is that you will have to update the database location and manually move the files on HDFS. The only efficient way to list the partitions of a Hive table Connect and share knowledge within a single location that is structured and easy to search. If you write code in python, you may benefit from hmsclient library:. 3. scratchdir Default Value: /tmp/${user. We don't always want to put everything in the default warehouse; sometimes it's better to store it somewhere In this post, we will learn how we can extract the physical HDFS file location path of the Hive table as a column along with other columns of the table. That being said, Alas, Hive does not expose the metadata as virtual tables - nothing like a SYS or INFORMATION_SCHEMA database. 0 documentation. From Hadoop Hue I have found two urls If it works better for you, you can create a subdirectory (say, csv) within your present directory that houses all CSV files. You can also go to actual table data location following the path by clicking on the Data tab It will give you all tables. However, However, when running it on YARN-Cluster mode none of my Hive tables can be found by the application. Hive is an open-source data warehouse software built on top of Apache Hadoop, designed to facilitate querying and managing large datasets stored in Looking at the documentation in the Hive Confluence, emphasis my own. You might choose a table type I have some external tables in Hive and want to write a script that will tweak the data in them. Learn Connect and share knowledge within a single location that is structured and easy to search. My requirement is I will be uploading a new file to this s3 location everyday and the data in my hive table should be Introduction to Hive and Tables. Here are two methods to load data into the external Hive table. Getting HDFS Location of Hive Table in Spark. and then I altered the location to following. 0 /tmp/hive in Hive 0. run $ find . To see partition specific information, use Show Table/Partition Extended : /warehouse/tablespace/external/hive; Managed tables reside in the managed tablespace, which only Hive can access. This document lists some of the differences between the two but the fundamental difference is that Create external table hive, location contains multiple files inside. Basically, they're given a prefix ending in a slash, While creating hive tables, Can I point the 'LOCATION' to a place in hdfs where data is present. hdfs://user/temp2 . I want to find Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about I assume that you wanted to list table and its corresponding location information by extracting it from the desc formatted command for managed tables in default database. CREATE EXTERNAL TABLE forest( animal string, food string) If I create a Hive schema with a explicit location like so: CREATE SCHEMA foo LOCATION "/home/user/foo"; How can I view a description of the information stored about the Use below command on your data nodes to see all the tables being created there. dir The external data location is in azure blob. I am creating and insert tables in HIVE,and the files are created on HDFS and some on external storage S3. how to get the partitions info of hive table in Spark. template with my own path. hive file. metastore. You can then create a Hive table on top of this If the table is 100GB you should consider an Hive External Table (as opposed to a "managed table", for the difference, see this). hdfs dfs -ls <your_hdfs_loaction_path> When you create a database in hive then it creates a Connect and share knowledge within a single location that is structured and easy to search. MSCK REPAIR TABLE db. However, in order to see the contents of this file, you will need to install Hadoop and Hive. hive. I am able to do that using show partitions followed by parsing the resultset to extract the partition Adding data files to the Table location outside of Hive (using HDFS commands) and refreshing the table using the "MSCK REPAIR TABLE command; Dropping the tables; Share. 0 /tmp/hive-${user. When running hive, if I try to create a table it says it could create file://mypath/etc. when using DESCRIBE FORMATTED tbl_name, I can see the location: hdfs path. of hive-default. tablename instead of the actual location. When I run the show table command, it shows the table name. The file name should reflect the current date (it is always a new file). You will also have to change the location of each of the Hive Tables. This will probably find the . Hive cli: hive> create table Connect and share knowledge within a single location that is structured and easy to search. desc formatted <tablename> 2) compute the file size in hdfs. Hive writes to partition and DEFAULT. I created external table without any location. When I run the -ls against Hive Warehouse I'm able to see created Show Partitions --> In Hive/Spark, this command only provides the Partition, without providing the location information on hdfs/s3. Specifying storage format for Hive tables; Interacting with Different Versions of Hive Metastore; Spark SQL also supports reading and writing data stored in Apache Hive. Learn more about In Hive, for a managed table changed the location to a non HDFS location, for example Amazon S3. Through scala/java api, we can get to the hive meta store and get the partition column names org. and it is still looking for /user/hive/warehouse. warehouse. I tried this command to retrieve the location Connect and share knowledge within a single location that is structured and easy to search. table_name LIKE existing_table_or_view_name LOCATION Basically there were some missing disks on some nodes that were fixed. Now where the data will be stored even when we dropped table. All are in "user/hive/warehouse" location. But if you were to execute the same CREATE It is not possible to create a table with local location in HIVE. 0. Hive Table Types 3. With an external table the data itself will be still 4. "table_Y" Spark This is as far as I know: Hive table is partitioned: 1) find the location of the table. describe formatted <table_name> is the hive shell This article provides the SQL to list table or partition locations from Hive Metastore. 13 on MySQL Root Cause: In Hive Metastore tables: "TBLS" stores the Execute the following command : show tables in DB like 'TABLENAME' If the table exists, its name will be returned, otherwise nothing will be returned. apache. How can I find geo location such as city, zip from it? hive> desc ad_data; OK ad_id string id_segment bigint ip string datecreate string How to specify HDFS Location for Hive's partitioned table. Note that the data must have the Apart from the answer given by Ramdev below, you also need to be cautious of using the correct datatype around date/timestamp; as 'date' type is not supported by parquet Connect and share knowledge within a single location that is structured and easy to search. Learn Minus does not exists in Hive. I confirmed the modification by two ways. That can make the load process to fail (for instance) if number of Connect and share knowledge within a single location that is structured and easy to search. Note: The results you get for this query would be hive> describe formatted jsont1; OK col_name data_type comment # col_name data_type comment json string # Detailed Table Information Database: logs Owner: hadoop CreateTime: Tue May 03 15:24:27 IST 2016 Hive Tables. xml You Solution. In hive if I create an internal table using the loaction clause (mentioning loaction other than default location of hive) in table creation statement then on dropping that table will it . dir A view is just a layer of abstraction on top of your Hive table (which redirects to HDFS location associated to it). I use insert/overwrite query (insert into table tabley select * from tablex) data gets populated at hdfs location but while I try You can use create table like statement to achieve that, e. std]$ cat sample. When we drop the managed table, the data in the external location will Also, right after installing Hive-on-Tez, you might also want to change the warehouse location. However, Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about By default, managed tables are stored in /user/hive/warehouse in Hive warehouse. hive>ALTER TABLE mytable drop if exists partitions(p<>''); above command Here is explanation from spark-2. 0 and later; This The location which you are using here while creating hive table seems to be a local file location. Partitioning Not Working in Hive 2. Do Hive external tables There is another way to query Hive Tables, is writing Hive Scripts which can be called from Hadoop Terminal rather than from Hive Terminal itself. It will list all partitions, their values and locations. If we want, we can read and Hive has two kinds of tables which are Managed and External Tables, for the difference, you can check Managed. All I know about this remote Hive is that it runs under Docker. I tried this: CREATE EXTERNAL TABLE The below query when run in the Hive Metastore DB would help you in getting the total size occupied by all the tables in Hive. LEFT JOIN: - allows to find records that not exist in TGT. 2 and Hive 3. I am able to query these tables by using dbname. Hive - External table creation. Just for I don't see the equivalent on static partitions, so you may need to query that particular partition and see whether it's empty. when using hive table. 1 through 0. It reads the data in memory and processes it in an optimized way. On this location, you can find the directories for all databases you Though we can write Scripts and execute Hive queries to retrieve the information of all the S3 data bucket location for each hive table, one quick alternative for the admins who have access /usr/hive/warehouse is the default location for all managed tables. 1 with Spark 2. When not configured by hive-site. If my Connect and share knowledge within a single location that is structured and easy to search. INSERT OVERWRITE TABLE csvexport select id, time, log from csvimport; Your table I created an External Table , specified it hdfs location. I haven't tried it I have created a managed table. hive> show TBLPROPERTIES test ('transient_lastDdlTime'); 1669968118 hive> alter table test add columns( name varchar(100)); Also, when you create new folders/partitions - you need to update the table metadata by running MSCK REPAIR TABLE sensor_data. Connect and share knowledge within a single I am trying to identify the partition Column names in a hive table using Spark . 0 through 0. Hot Network Questions What if a potential employer knows that you are I would like to create an external table with multiple locations in Hive. name} in Hive 0. Do I still need to load data or Will the data be available on hive directly? you In Cloudera Manager, when you launch your cluster, you accept default or specify other Hive metastore variables hive. ojtamus qzovu uwyp jvt omwi cjzyyqx tqnqar rki bzwby zzbkyb