Reply 9,098 Views 0 Kudos ranan Contributor Created 07-06-2018 09:28 AM Thank you for your reply Eric Du return 2 number. Analyzing a table (also known as computing statistics) is a built-in Hive operation that you can execute to collect metadata on your table. the serde. 07-06-2018 We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. You can determine the size of a non-delta table by calculating the total sum of the individual files within the underlying directory. P.S: previous approach is applicable for one table. Is it possible to create a concave light? 01-13-2017 The total size of the Hive Database can be fetched using Hive Metastore DB in the TABLE_PARAMS table. Created Answer. Using hive.auto.convert.join.noconditionaltask, you can combine three or more map-side joins into a (This rule is defined by hive.auto.convert.join.noconditionaltask.size.) Why did Ukraine abstain from the UNHRC vote on China? 09-16-2022 # The results of SQL queries are themselves DataFrames and support all normal functions. By default, S3 Select is disabled when you run queries. Jason Dere (JIRA) [jira] [Updated] (HIVE-19334) Use actual file size . rev2023.3.3.43278. numRows=21363807, totalSize=564014889, rawDataSize=47556570705], Partition logdata.ops_bc_log{day=20140524} stats: [numFiles=35, The query takes the sum of total size of all the Hive tables based on the statistics of the tables. Once done, you can execute the below query to get the total size of all the tables in Hive in bytes. Although Hudi provides sane defaults, from time-time these configs may need to be tweaked to optimize for specific workloads. SELECT SUM (PARAM_VALUE) FROM TABLE_PARAMS WHERE PARAM_KEY="totalSize"; Get the table ID of the Hive table forms the TBLS table and run the following query: SELECT TBL_ID FROM TBLS WHERE TBL_NAME='test'; SELECT * FROM TABLE_PARAMS WHERE TBL_ID=5109; hive> describe extended bee_master_20170113_010001> ;OKentity_id stringaccount_id stringbill_cycle stringentity_type stringcol1 stringcol2 stringcol3 stringcol4 stringcol5 stringcol6 stringcol7 stringcol8 stringcol9 stringcol10 stringcol11 stringcol12 string, Detailed Table Information Table(tableName:bee_master_20170113_010001, dbName:default, owner:sagarpa, createTime:1484297904, lastAccessTime:0, retention:0, sd:StorageDescriptor(cols:[FieldSchema(name:entity_id, type:string, comment:null), FieldSchema(name:account_id, type:string, comment:null), FieldSchema(name:bill_cycle, type:string, comment:null), FieldSchema(name:entity_type, type:string, comment:null), FieldSchema(name:col1, type:string, comment:null), FieldSchema(name:col2, type:string, comment:null), FieldSchema(name:col3, type:string, comment:null), FieldSchema(name:col4, type:string, comment:null), FieldSchema(name:col5, type:string, comment:null), FieldSchema(name:col6, type:string, comment:null), FieldSchema(name:col7, type:string, comment:null), FieldSchema(name:col8, type:string, comment:null), FieldSchema(name:col9, type:string, comment:null), FieldSchema(name:col10, type:string, comment:null), FieldSchema(name:col11, type:string, comment:null), FieldSchema(name:col12, type:string, comment:null)], location:hdfs://cmilcb521.amdocs.com:8020/user/insighte/bee_data/bee_run_20170113_010001, inputFormat:org.apache.hadoop.mapred.TextInputFormat, outputFormat:org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat, compressed:false, numBuckets:-1, serdeInfo:SerDeInfo(name:null, serializationLib:org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe, parameters:{field.delim= , serialization.format=Time taken: 0.328 seconds, Fetched: 18 row(s)hive> describe formatted bee_master_20170113_010001> ;OK# col_name data_type comment, entity_id stringaccount_id stringbill_cycle stringentity_type stringcol1 stringcol2 stringcol3 stringcol4 stringcol5 stringcol6 stringcol7 stringcol8 stringcol9 stringcol10 stringcol11 stringcol12 string, # Detailed Table InformationDatabase: defaultOwner: sagarpaCreateTime: Fri Jan 13 02:58:24 CST 2017LastAccessTime: UNKNOWNProtect Mode: NoneRetention: 0Location: hdfs://cmilcb521.amdocs.com:8020/user/insighte/bee_data/bee_run_20170113_010001Table Type: EXTERNAL_TABLETable Parameters:COLUMN_STATS_ACCURATE falseEXTERNAL TRUEnumFiles 0numRows -1rawDataSize -1totalSize 0transient_lastDdlTime 1484297904, # Storage InformationSerDe Library: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDeInputFormat: org.apache.hadoop.mapred.TextInputFormatOutputFormat: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormatCompressed: NoNum Buckets: -1Bucket Columns: []Sort Columns: []Storage Desc Params:field.delim \tserialization.format \tTime taken: 0.081 seconds, Fetched: 48 row(s)hive> describe formatted bee_ppv;OK# col_name data_type comment, entity_id stringaccount_id stringbill_cycle stringref_event stringamount doubleppv_category stringppv_order_status stringppv_order_date timestamp, # Detailed Table InformationDatabase: defaultOwner: sagarpaCreateTime: Thu Dec 22 12:56:34 CST 2016LastAccessTime: UNKNOWNProtect Mode: NoneRetention: 0Location: hdfs://cmilcb521.amdocs.com:8020/user/insighte/bee_data/tables/bee_ppvTable Type: EXTERNAL_TABLETable Parameters:COLUMN_STATS_ACCURATE trueEXTERNAL TRUEnumFiles 0numRows 0rawDataSize 0totalSize 0transient_lastDdlTime 1484340138, # Storage InformationSerDe Library: org.apache.hadoop.hive.ql.io.parquet.serde.ParquetHiveSerDeInputFormat: org.apache.hadoop.hive.ql.io.parquet.MapredParquetInputFormatOutputFormat: org.apache.hadoop.hive.ql.io.parquet.MapredParquetOutputFormatCompressed: NoNum Buckets: -1Bucket Columns: []Sort Columns: []Storage Desc Params:field.delim \tserialization.format \tTime taken: 0.072 seconds, Fetched: 40 row(s), Created Checking the different parameters of the table in Hive Metastore table TABLE_PARAMS for the same Hive table with id 5783. What sort of strategies would a medieval military use against a fantasy giant? 2. . "SELECT * FROM records r JOIN src s ON r.key = s.key", // Create a Hive managed Parquet table, with HQL syntax instead of the Spark SQL native syntax, "CREATE TABLE hive_records(key int, value string) STORED AS PARQUET", // Save DataFrame to the Hive managed table, // After insertion, the Hive managed table has data now, "CREATE EXTERNAL TABLE hive_bigints(id bigint) STORED AS PARQUET LOCATION '$dataDir'", // The Hive external table should already have data. 09:39 AM. SELECT SUM(PARAM_VALUE) FROM TABLE_PARAMS WHERE PARAM_KEY=totalSize; Get the table ID of the Hive table forms the TBLS table and run the following query: SELECT TBL_ID FROM TBLS WHERE TBL_NAME=test; SELECT * FROM TABLE_PARAMS WHERE TBL_ID=5109; GZIP. Open Sourcing Clouderas ML Runtimes - why it matters to customers? The company is the world's leading enterprise resource planning (ERP) software vendor. (Apologies for the newb question. In Hive, user/hive/warehouse is the default directory. This article shows how to import a Hive table from cloud storage into Databricks using an external table. 30376289388684 x 3 is the actual size in HDFS including the replication. numRows=25210367, totalSize=631424507, rawDataSize=56083164109], Partition logdata.ops_bc_log{day=20140522} stats: [numFiles=37, 05:38 PM, Created and its dependencies, including the correct version of Hadoop. Linear regulator thermal information missing in datasheet, Short story taking place on a toroidal planet or moon involving flying. // warehouseLocation points to the default location for managed databases and tables, "CREATE TABLE IF NOT EXISTS src (key INT, value STRING) USING hive", "LOAD DATA LOCAL INPATH 'examples/src/main/resources/kv1.txt' INTO TABLE src". 01-16-2017 Thanks for contributing an answer to Stack Overflow! How do you remove Unfortunately Settings has stopped? SKU:DE9474483 For example, Hive UDFs that are declared in a Note that independent of the version of Hive that is being used to talk to the metastore, internally Spark SQL 1. find out the path of the hive tables: for example, find the path for table r_scan1, Hive supports ANSI SQL and atomic, consistent, isolated, and durable (ACID) transactions. Do roots of these polynomials approach the negative of the Euler-Mascheroni constant? To get the size of your test table (replace database_name and table_name by real values) just use something like (check the value of hive.metastore.warehouse.dir for /apps/hive/warehouse): [ hdfs @ server01 ~] $ hdfs dfs -du -s -h / apps / hive / warehouse / database_name / table_name Use hdfs dfs -du Command But opting out of some of these cookies may affect your browsing experience. Materialized views optimize queries based on access patterns. So far we have been inserting data into the table by setting the following properties hive> set hive.exec.compress.output=true; hive> set avro.output.codec=snappy; However, if someone forgets to set the above two properties the compression is not achieved. But it is useful for one table. Steps to Read Hive Table into PySpark DataFrame Step 1 - Import PySpark Step 2 - Create SparkSession with Hive enabled Step 3 - Read Hive table into Spark DataFrame using spark.sql () Step 4 - Read using spark.read.table () Step 5 - Connect to remove Hive. Is there a way to check the size of Hive tables in one shot? Available in extra large sizes, a modern twist on our popular Hive Google says; Snappy is intended to be fast. This tblproperties will give the size of the table and can be used to grab just that value if needed. # |key| value|key| value| 1) SELECT key, size FROM table; 4923069104295859283. Prerequisites The Hive and HDFS components are running properly. Use parquet format to store data of your external/internal table. 07-11-2018 Whats the grammar of "For those whose stories they are"? It would seem that if you include the partition it will give you a raw data size. To learn more, see our tips on writing great answers. Hive stores query logs on a per Hive session basis in /tmp/<user.name>/ by default. See other answer below. To list the sizes of Hive tables in Hadoop in GBs: 1 1 sudo -u hdfs hadoop fs -du /user/hive/warehouse/ | awk '/^ [0-9]+/ { print int ($1/ (1024**3)) " [GB]\t" $2 }' Result: 1 448 [GB]. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. - the incident has nothing to do with me; can I use this this way? For updating data, you can use the MERGE statement, which now also meets ACID standards. # # You can also use DataFrames to create temporary views within a SparkSession. - edited When not configured # +--------+ Switch to the HBase schema and issue the SHOW TABLES command to see the HBase tables that exist within the schema. Next, verify the database is created by running the show command: show databases; 3. Once the storage tables are populated, the materialized view is created, and you can access it like a table using the name of the materialized view. shared between Spark SQL and a specific version of Hive. Making statements based on opinion; back them up with references or personal experience. Other classes that need By default, we will read the table files as plain text. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. The param COLUMN_STATS_ACCURATE with the value true says the table's statistics property is set to true. The threshold (in bytes) for the input file size of the small tables; if the file size is smaller than this threshold, it will try to convert the common join into map join. numRows=26095186, totalSize=654249957, rawDataSize=58080809507], Partition logdata.ops_bc_log{day=20140521} stats: [numFiles=30, # |238|val_238| These options can only be used with "textfile" fileFormat. Managed or external tables can be identified using the DESCRIBE FORMATTED table_name command, which will display either MANAGED_TABLE or EXTERNAL_TABLE depending on table type. How do you enable compression on a hive table? Also, this only works for non-partitioned tables which have had stats run on them. Open Synapse Studio, go to Manage > Linked services at left, click New to create a new linked service.. # +---+-------+ For text-based files, use the keywords STORED as TEXTFILE. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 99.4 is replica of the data right hdfs dfs -du -s -h /data/warehouse/test.db/test Why keep stats if we cant trust that the data will be the same in another 5 minutes? Hive - Partition . The totalSize record indicates the total size occupied by this table in HDFS for one of its replica. Free Shipping HIVE TO TABLE HONEY ORGANIC NON GMO Advertising Vinyl Banner Flag Sign Many Size World-renowned fashion, Official Site., tens of thousands of products for your choice. Is there a solution to add special characters from software and how to do it. 324 and 972 are the sizes of one and three replicas of the table data in HDFS. You can alternatively set parquet. What is Hive Temporary Tables? 01-09-2018 How to show hive table size in GB ? 08:48 PM, Created Step 3: Issue SQL commands on your data. 01:40 PM. by the hive-site.xml, the context automatically creates metastore_db in the current directory and SAP is the largest non-American software company by revenue, the . Full text of the 'Sri Mahalakshmi Dhyanam & Stotram', Relation between transaction data and transaction id. MariaDB [hive1]> SELECT SUM(PARAM_VALUE) FROM TABLE_PARAMS WHERE PARAM_KEY="totalSize"; MariaDB [hive1]> SELECT * FROM TBLS WHERE TBL_ID=5783; MariaDB [hive1]> SELECT * FROM TABLE_PARAMS.