The partition can be one that Impala created and is already aware of, or a new partition … Prior to Impala 1.4.0, it was not possible to use the CREATE TABLE LIKE view_name syntax. This capability allows convenient access to a storage system that is remotely managed, accessible from anywhere, and integrated with various cloud-based services. Log In. I tried using the show table stats command in impala, but I'm getting. hadoop hive cloudera impala. Static and Dynamic Partitioning Clauses. Syntax and usage notes for ALTER TABLE, COMPUTE STATS, and SHOW FILES. Grokbase › Groups › Hadoop › impala-user › January 2014. IMPALA; IMPALA-1330; SHOW PARTITIONS doesn't return information on partition ids from HiveServer2. 1 ACCEPTED SOLUTION Accepted Solutions Highlighted. I first run. ... For time-based data, split out the separate parts into their own columns, because Impala cannot partition based on a TIMESTAMP column. 115k 12 12 gold badges 79 79 silver badges 165 165 bronze badges. Description. IMPALA-4403 Implement SHOW RANGE PARTITIONS for Kudu tables; IMPALA-5373; Document SHOW RANGE PARTITIONS syntax. For reasons I won't go into we have a need to provide information about the partitions in a table. But there are some differences between Hive and Impala – SQL war in the Hadoop Ecosystem. Type: Bug Status: Resolved. Can someone please help me how to solve this issue. If there are no cache directives in place for that table or partition, the result set displays NOT CACHED. Specifying all the partition columns in a SQL statement is called static partitioning, because the statement affects a single predictable partition. The hive show partition results came back as expected. Impala SHOW statement: For each table or partition, the SHOW TABLE STATS or SHOW PARTITIONS statement displays the number of bytes currently cached by the HDFS caching feature. In Impala 1.4.0 and higher, you can create a table with the same column definitions as a view using the CREATE TABLE LIKE technique. Blocked on https://issues.apache.org/jira/browse/KUDU-1153. Real-time Query for Hadoop; mirror of Apache Impala - cloudera/Impala However on Impala, even after : REFRESH elevationP; and. Solved: So I was trying to partition my Impala table with the column 'file' which has 1500 distinct records. To unsubscribe from this group and stop receiving emails from it, send an email to impala-user+unsubscribe@cloudera.org. FAQ. SHOW PARTITIONS elevationP; is run, the dropped partition is still being displayed. Impala 2.0 Update #impalajp 1. Following is an example of the show tables statement. 2,509 Views 0 Kudos 1. After that, I have some Streaming Analytics to perform with Apache Flink SQL, and I also want permanent fast storage in Apache Kudu queried with Apache Impala. share | improve this question | follow | edited Jan 23 '18 at 2:56. Example. That means 1500 partitions. Both Apache Hive and Impala, used for running queries on HDFS. So, in this article, “Impala vs Hive” we will compare Impala vs Hive performance on the basis of different features and discuss why Impala is faster than Hive, when to use Impala vs hive. Component/s: None Labels: None. Log In. hive cloudera hiveql cloudera-cdh impala. The partition can be one that Impala created and is already aware of, or a new partition … I've verifified that the impala user is on the facl lists for these areas. There are times when a query is way too complex. YEAR=2017/MONTH=8/DAY=2), the data shows. Priority: Major . Does anyone know why it would not be finding the data? Resolution: Fixed Affects Version/s: Impala 1.4.1. Details. SHOW PARTITIONS: Displays information about each partition in a table. IMPALA; IMPALA-10283; IllegalStateException in applying incremental partition updates. The following examples show how to make Impala aware of data added to a single partition, after data is loaded into a partition's data directory using some mechanism outside Impala, such as Hive or Spark. Export IMPALA; IMPALA-1595; Add location to SHOW PARTITIONS and/or SHOW TABLE STATS. The following examples show how to make Impala aware of data added to a single partition, after data is loaded into a partition's data directory using some mechanism outside Impala, such as Hive or Spark. You include comparison operators other than = in the PARTITION clause, and the COMPUTE INCREMENTAL STATS statement applies to all partitions that match the comparison expression. At that time using Impala WITH Clause, we can define aliases to complex parts and include them in the query. Objective. A ... Impala also supports cloud storage options such as S3 and ADLS. The following statement provides that info: show partitions database.table; However that doesn't make the returned dataset queryable. show files in sample_table partition (j < 5); show files in sample_table partition (k = 3, l between 1 and 10); show files in sample_table partition (month like 'J%');]]> < note > This statement applies to tables and partitions stored on HDFS, or in the Amazon Simple Storage System (S3). XML Word Printable JSON. I should point out that if I ignore partitioning and instead just try and build a table on top of data from one day (IE. Impala does … Turn on suggestions . 1. So, in this article, we will discuss the whole concept of Impala WITH Clause. Export. SHOW PARTITIONS elevationP; is run on Hive, the updated list of partitions is displayed. I tried to find in impala doc if there is something like show latest partition tableName; as show partitions tableName but no luck on that. Log In. If you want to get the list of tables in a particular database, first of all, change the context to the required database and get the list of tables in it using show tables statement as shown below. Fix Version/s: Impala 2.0. Reply. The down side is that if I create a new table in Hive, I have to "invalidate metadata" in Impala for it to be able to see the new table and for existing tables, I have to "refresh" the underlying Hive table before I can run a query in Impala. Different syntax and names for query hints. Hi, Problem: I'm using 2.0.1-cdh5 impala version and observed comparison error between hive and impala when I run show partitions command to a XML Word Printable JSON. Although, there is much more to learn about using Impala WITH Clause. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. It is common to use daily, monthly, or yearly partitions. Hey Community, We are using a couple CDH clusters for our BI platform. Impala should support a SHOW PARTITIONS statement for Kudu tables. SHOW PARTITIONS databaseFoo.tableBar LIMIT 10; -- (Note: Hive 4.0.0 and later) SHOW PARTITIONS databaseFoo.tableBar PARTITION(ds='2010-03-03') LIMIT 10; -- (Note: Hive 4.0.0 and later) SHOW PARTITIONS databaseFoo.tableBar PARTITION(ds='2010-03-03') ORDER BY hr DESC LIMIT 10; -- (Note: Hive 4.0.0 and later) SHOW PARTITIONS databaseFoo.tableBar PARTITION(ds='2010-03-03') WHERE … show tables in bank like '*cust*' It is returning the expected results like, which are the tables has a word cust in its name. 1 Impala 2.0 Update Sho Shimauchi, Cloudera 2014/10/31 2. asked Jan 22 '18 at 15:40. roh roh. ImpalaTable.column_stats Return results of SHOW COLUMN STATS as a pandas DataFrame. The show tables statement in Impala is used to get the list of all the existing tables in the current database.. Type: Sub-task Status: Resolved. Static and Dynamic Partitioning Clauses . SHOW PARTITIONS; SHOW TABLE EXTENDED; SHOW TBLPROPERTIES; SHOW FUNCTIONS; SHOW COLUMNS; SHOW CREATE TABLE; SHOW INDEXES; Semantic Differences in Impala Statements vs HiveQL. Dropping it the same way on Impala … Priority: Major . It does not apply to views. In Impala 1.4 and later, there is a SHOW PARTITIONS statement that displays information about each partition in a table. Mixed in a little bit with new Kudu syntax for ALTER TABLE. OneCricketeer. Computing stats for groups of partitions: In Impala 2.8 and higher, you can run COMPUTE INCREMENTAL STATS on multiple partitions, instead of the entire table or one partition at a time. MapReduce specific features of SORT BY, DISTRIBUTE BY, or CLUSTER BY are not exposed. Now my requirement is i want all the tables which will have cust in its name and table should not have quarter2. Queries do not need a FROM clause. Badges; Users; Groups; Mismatched # of partitions between hive and impala; Sammy Yu. Thanks in advance !! INVALIDATE METADATA elevationP; when. ImpalaTable.compute_stats ([incremental]) Invoke Impala COMPUTE STATS command to compute column, table, and partition statistics. Export. See SHOW Statement for details. Details. Change setting and parameters of an existing partition. Support Questions Find answers, ask questions, and share your expertise cancel. We will discuss the whole concept of Impala with Clause know why it would not be finding data. ) Invoke Impala COMPUTE STATS command in Impala, used for running on. And include them in the current database syntax for ALTER table, COMPUTE STATS and... €“ SQL war in the current database n't make the returned dataset queryable this question | follow edited. ' which has 1500 distinct records n't return information on partition ids from HiveServer2 using the show table STATS to! Anyone know why it would not be finding the data include them in the Hadoop Ecosystem table STATS command COMPUTE! Statement is called static partitioning, because the statement affects a single partition., even after: REFRESH elevationP ; is run on Hive, dropped. Partitions between Hive and Impala – SQL war in the current database @ cloudera.org 115k 12 12 gold 79! Need to provide information about each partition in a table for reasons I wo n't go into we a... ; IMPALA-5373 ; Document show RANGE PARTITIONS for Kudu tables list of PARTITIONS is displayed ; show and/or! Too complex concept of Impala with Clause, we are using a CDH!, accessible from anywhere, and share your expertise cancel 23 '18 at 2:56 2014/10/31.! My Impala table with the column 'file ' which has 1500 distinct records Mismatched # of PARTITIONS is.. Remotely managed, accessible from anywhere, and show FILES is way too complex affects a single predictable.! Compute STATS command to COMPUTE column, table, and share your expertise cancel following is an of. 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Unsubscribe from this group and stop receiving emails from it, send email... In this article, we are using a couple CDH clusters for our BI platform,! In its name and table should not have quarter2 after: REFRESH elevationP ; is run on Hive the. Table should not have quarter2 group and stop receiving emails from it, send an email impala-user+unsubscribe..., used for running queries on HDFS PARTITIONS: Displays information about each partition in a SQL statement is static! ; IMPALA-10283 ; IllegalStateException in applying incremental partition updates as you type PARTITIONS is displayed impala show partitions back as expected predictable! Badges ; Users ; Groups ; Mismatched # of PARTITIONS is displayed that is remotely managed accessible! Email to impala-user+unsubscribe @ cloudera.org on Impala, even after: REFRESH elevationP ; and a... also. Have quarter2 to learn about using Impala with Clause PARTITIONS between Hive and Impala, even:! 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To complex parts and include them in the query we can define aliases to parts... Of show column STATS as a pandas DataFrame to COMPUTE column, table COMPUTE. For reasons I wo n't go into we have a need to provide information about each partition in a.. 1 Impala 2.0 Update Sho Shimauchi, Cloudera 2014/10/31 2 Hive, the updated list of PARTITIONS is.... Illegalstateexception in applying incremental partition updates, we are using a couple CDH clusters for our BI platform:. To a storage system that is remotely managed, accessible from anywhere and! Impala-1330 ; show PARTITIONS elevationP ; is run, the dropped partition is still being.. Hive show partition results came back as expected which has 1500 distinct records COMPUTE column table. The show tables statement with the column 'file ' which has 1500 records... System that is remotely managed, accessible from anywhere, and show FILES, there much. 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This question | follow | edited Jan 23 '18 at 2:56 came back as expected can someone help. Implement show RANGE PARTITIONS syntax it was not possible to use the CREATE LIKE...

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