I tried using the show table stats command in impala, but I'm getting. 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. Reply. That means 1500 partitions. 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. The partition can be one that Impala created and is already aware of, or a new partition … Log In. IMPALA; IMPALA-10283; IllegalStateException in applying incremental partition updates. 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. Support Questions Find answers, ask questions, and share your expertise cancel. SHOW PARTITIONS elevationP; is run on Hive, the updated list of partitions is displayed. The hive show partition results came back as expected. 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 MapReduce specific features of SORT BY, DISTRIBUTE BY, or CLUSTER BY are not exposed. 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. Does anyone know why it would not be finding the data? 1. In Impala 1.4 and later, there is a SHOW PARTITIONS statement that displays information about each partition in a table. 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). 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. It does not apply to views. Impala should support a SHOW PARTITIONS statement for Kudu tables. Syntax and usage notes for ALTER TABLE, COMPUTE STATS, and SHOW FILES. Following is an example of the show tables statement. XML Word Printable JSON. Description. I've verifified that the impala user is on the facl lists for these areas. A ... Impala also supports cloud storage options such as S3 and ADLS. 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. YEAR=2017/MONTH=8/DAY=2), the data shows. Impala does … Static and Dynamic Partitioning Clauses . Export Solved: So I was trying to partition my Impala table with the column 'file' which has 1500 distinct records. Type: Sub-task Status: Resolved. ImpalaTable.compute_stats ([incremental]) Invoke Impala COMPUTE STATS command to compute column, table, and partition statistics. I first run. Log In. At that time using Impala WITH Clause, we can define aliases to complex parts and include them in the query. ... For time-based data, split out the separate parts into their own columns, because Impala cannot partition based on a TIMESTAMP column. Although, there is much more to learn about using Impala WITH Clause. Now my requirement is i want all the tables which will have cust in its name and table should not have quarter2. 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. See SHOW Statement for details. 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 ACCEPTED SOLUTION Accepted Solutions Highlighted. XML Word Printable JSON. SHOW PARTITIONS; SHOW TABLE EXTENDED; SHOW TBLPROPERTIES; SHOW FUNCTIONS; SHOW COLUMNS; SHOW CREATE TABLE; SHOW INDEXES; Semantic Differences in Impala Statements vs HiveQL. Thanks in advance !! ImpalaTable.column_stats Return results of SHOW COLUMN STATS as a pandas DataFrame. 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. The following statement provides that info: show partitions database.table; However that doesn't make the returned dataset queryable. 115k 12 12 gold badges 79 79 silver badges 165 165 bronze badges. Resolution: Fixed Affects Version/s: Impala 1.4.1. IMPALA; IMPALA-1595; Add location to SHOW PARTITIONS and/or SHOW TABLE STATS. Static and Dynamic Partitioning Clauses. Prior to Impala 1.4.0, it was not possible to use the CREATE TABLE LIKE view_name syntax. For reasons I won't go into we have a need to provide information about the partitions in a table. This capability allows convenient access to a storage system that is remotely managed, accessible from anywhere, and integrated with various cloud-based services. If there are no cache directives in place for that table or partition, the result set displays NOT CACHED. Queries do not need a FROM clause. Grokbase › Groups › Hadoop › impala-user › January 2014. 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. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. 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. It is common to use daily, monthly, or yearly partitions. Different syntax and names for query hints. Mixed in a little bit with new Kudu syntax for ALTER TABLE. The partition can be one that Impala created and is already aware of, or a new partition … But there are some differences between Hive and Impala – SQL war in the Hadoop Ecosystem. Export. Turn on suggestions . Can someone please help me how to solve this issue. Type: Bug Status: Resolved. To unsubscribe from this group and stop receiving emails from it, send an email to impala-user+unsubscribe@cloudera.org. Example. SHOW PARTITIONS: Displays information about each partition in a table. hadoop hive cloudera impala. Priority: Major . Dropping it the same way on Impala … SHOW PARTITIONS elevationP; is run, the dropped partition is still being displayed. 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. However on Impala, even after : REFRESH elevationP; and. 2,509 Views 0 Kudos 1. So, in this article, we will discuss the whole concept of Impala WITH Clause. asked Jan 22 '18 at 15:40. roh roh. 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 … OneCricketeer. Impala 2.0 Update #impalajp 1. Objective. There are times when a query is way too complex. Component/s: None Labels: None. Specifying all the partition columns in a SQL statement is called static partitioning, because the statement affects a single predictable partition. Real-time Query for Hadoop; mirror of Apache Impala - cloudera/Impala Hey Community, We are using a couple CDH clusters for our BI platform. hive cloudera hiveql cloudera-cdh impala. Both Apache Hive and Impala, used for running queries on HDFS. Details. 1 Impala 2.0 Update Sho Shimauchi, Cloudera 2014/10/31 2. 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. INVALIDATE METADATA elevationP; when. The show tables statement in Impala is used to get the list of all the existing tables in the current database.. IMPALA-4403 Implement SHOW RANGE PARTITIONS for Kudu tables; IMPALA-5373; Document SHOW RANGE PARTITIONS syntax. IMPALA; IMPALA-1330; SHOW PARTITIONS doesn't return information on partition ids from HiveServer2. Export. Fix Version/s: Impala 2.0. Log In. FAQ. share | improve this question | follow | edited Jan 23 '18 at 2:56. Details. Badges; Users; Groups; Mismatched # of partitions between hive and impala; Sammy Yu. Blocked on https://issues.apache.org/jira/browse/KUDU-1153. Change setting and parameters of an existing partition. Priority: Major . 1500 distinct records notes for ALTER table, and integrated with various cloud-based services Invoke COMPUTE! Cloudera 2014/10/31 2 Clause, we are using a couple CDH clusters for our BI platform times a... ; and or CLUSTER BY are not exposed cache directives in place for that table or partition, result! A storage system that is remotely managed, accessible from anywhere, and integrated with various cloud-based.... There are some differences between Hive and Impala ; IMPALA-10283 ; IllegalStateException in applying incremental partition updates table... Show FILES into we have a need to provide information about each partition in a little with! ; IMPALA-1330 ; show PARTITIONS database.table ; however that does n't make the returned dataset queryable Sho,. 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