presto create table with partition

When a ACID table is created in hive the folder structure is "PARTITION/delta_xxxx/bucket_xxx". DiskPart is a command-line disk partition management tool built-in all Windows versions, such as Windows 10, Windows 8, Windows 7, which replaces its predecessor, FDISK. event_at_utc timestamp, create table employee( This seems to be the same as what Hive does In our case we have an int partition named hour and when we query from Presto, say for hour=1, we don't get any rows because the partition hour=1 didn't exist in the metastore while hour=01 did. Now a days enterprises run databases of hundred of Gigabytes in size. The int part specifies the data type of the column used for partitioning. Already on GitHub? I've also experienced this issue with Hive 1.x and Presto 0.155. ok, so it seems that Impala doesn't support bucket table either. Insert to bucketed and sorted Hive table produces not sorted files on file system. Or has it been solved already in a more recent version of Presto? I think it is related to the directory structure expected by Presto for bucketed tables. at com.facebook.presto.hive.HivePageSourceProvider.getHiveRecordCursor(HivePageSourceProvider.java:128) Let’s say you have a table. For example you have a SALES table with the following structureSuppose this table contains millions of records, but all the records belong to four years only i.e. Appreciate it. The default is DAY if time_partitioning_type is unspecified. @jsavolainen Is there any other solution to this problem ? stores ; Analyze partitions '1992-01-01', '1992-01-02' from a Hive partitioned table sales : The optional IF NOT EXISTS clause causes the error to be suppressed if the table already exists. @av-416, Can you suggest any work around this? The code for parsing ACID bucket structure is copied from Hive 2.3, but it should be backwards compatible with earlier Hive versions. }. @richardxin .. we are also facing the same issue while using presto+hive. Has anyone been able to resolve this issue? To turn this off set hive.exec.dynamic.partition.mode=nonstrict. The following example creates a table of four partitions, one for each quarter of sales. If the table is partitioned, call MSCK REPAIR TABLE delta_table_for_presto. Sorted bucketed tables are not supported for writes. On the Select a Partitioning Column page, in the Available partitioning columns grid, select the column on which you want to partition your table. Use the sql statement SHOW CREATE TABLE to query the existing range partitions (they are shown in the table property range_partitions). From Oracle Ver. Use CREATE TABLE to create an empty table. For the ACID bucketed table you would have a folder structure like: Currently this ACID support is limited to delta files with INSERT-only statements. Full read support would be much more complicated to implement. This is the exception thrown in the BackgroundHiveSplitLoader. https://github.com/jsavolainen/presto/tree/hive-acid. CDH5.7.2 gps_at timestamp, Apart from delta directories, there is another sub-directory that is now added called “Base directory” and is named as base_ under partition/table location. Next, you specify a SUBPARTITION BY clause that follows similar syntax and rules as the PARTITION BY clause. And I use the following to create an external table with presto in hive: create table hive.testschema.au1 (count bigint, matched bigint) with (format='TEXTFILE', external_location='hdfs://192.168.0.115:9000/user/bzhang/filefortable'); Partitions may have their own indexes, constraints and default values, distinct from those of other partitions. It is declared as being bucketed, but the files do not match the bucketing declaration. The VALUES LESS THAN clause determines the partition bound: rows with partitioning key values that compare less than the ordered list of values specified by the clause are stored in the partition. Please check https://github.com/jsavolainen/presto/tree/hive-acid for an experimental support for reading Hive ACID tables. I do not need to insert / update using presto. To better understand how partitioning and bucketing works, please take a look at how data is stored in hive. This shows bucket files are not directly under Partition folder but under a sub-directory starting with delta. Partitions in SQL Server: Creating a Partitioned Table Partitions in SQL Server: Creating a Partitioned Table. @theJohnnyBrown recently we hit a similar problem. name varchar(64), Sign up for a free GitHub account to open an issue and contact its maintainers and the community. Presto has supported bucketed tables for both read an write for a long time now. If you query a partitioned table and specify the partition in the WHERE clause, Athena scans the data only from that partition. 1 statement failed. ) When you create a new partition, that partition usually inherits the schema of the table. default . 'sa' presto 0.152. id int, Presto-0.206 1.CREATE table with partitioned_by, then insert data, queries partitions works 2.CREATE table with external_location and partitioned_by (map to existing data with partitions), then queries partitions does not work, I checked the hive metastore, there is no partitions meta for external table. create table TEST_HIVE_BUCKETS_AGAIN ( COL1_NEW string, COL2_NEW string ) PARTITIONED BY ( eff_dt timestamp) CLUSTERED BY( COL2_NEW) INTO 10 BUCKETS; INSERT INTO TABLE TEST_HIVE_BUCKETS_AGAIN PARTITION (eff_dt) Select 'TEST_COL1-1', 'TEST_COL1', from_unixtime(unix_timestamp('20170101081559999', 'yyyyMMddHHmmssSSS')); INSERT INTO TABLE TEST_HIVE_BUCKETS_AGAIN PARTITION … Use CREATE TABLE AS to create a table with data. Using partitioning(partitioned_by) or bucketing(bucketed_by) columns are not supported in CREATE TABLE. Next we create a partition function called MoviesPartitionFunction that will partition the table into four partitions. XML Word Printable JSON. Create a new table containing the result of a SELECT query. We will like to handle data restatements and SCDs using Hive transactional tables and are looking for alternatives. Below is the particular code in Presto that is causing the exception ) clustered by (age) into 2 buckets stored as orc tblproperties('transactional'='true'); The text was updated successfully, but these errors were encountered: Have you configured this: set hive.enforce.bucketing = true? Sign in The path of the data encodes the partitions and their values. Parallelism: 0.0 #3791 If INCLUDING PROPERTIES is specified, all of the table properties are copied to the new table. name varchar(64), show partitions in Hive table Partitioned directory in the HDFS for the Hive table Lets check the partitions for the created table customer_transactions using the show partitions command in Hive. LOCATION 's3://some-place/DRIVERS_LOCATIONS'. @cheekoo09 The Teradata fork of Presto fixes just a compatibility issue with Hive 2.x non-transactional bucketed tables, but is still incompatible with transactional tables. // Fail here to be on the safe side. status string, The optional WITH clause can be used to set properties on the newly created table. Delta Directory: This type is created for the results of INSERT statements and is named delta__ under partition/table location. Both INSERT and CREATE statements support partitioned tables. Any plans in future to support the same? In the Create Partition Wizard, on the Welcome to the Create Partition Wizard page, click Next. at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) age int From this result, you can retrieve mysql server records in Presto. It is not possible to turn a regular table into a partitioned table … Has there been any update on transaction table support? By any chance did you find any solution for this ? Query presto:tutorials> create table mysql.tutorials.sample as select * from mysql.tutorials.author; Result CREATE TABLE: 3 rows 2019-02-02 . I am getting the below error: Query failed (#20171118_092228_00001_888jb): Hive table is corrupt. I believe Teradata distribution for Presto has fixed this issue. Create a Partition Function. Over time, the schemas may start to differ. What Is Diskpart. Thanks for your response Dain. Like Hive and Presto, we can create the table programmatically from the command line or interactively; I prefer the programmatic approach. Create another table only for Presto or Athena using the manifest location. This utility enables users to perform many disk and partition operations. Is there a ticket open to solve this issue? Let's wait for the review, and you could ask EMR to backport this PR. to your account. The optional IF NOT EXISTS clause causes the error to be suppressed if the table already exists. but if I added one bucket in another partition. We’ll occasionally send you account related emails. CREATE TABLE AS is not supported. Export. Procedures# system.create_empty_partition(schema_name, table_name, partition_columns, partition_values) Create an empty partition in the specified table. at com.facebook.presto.execution.TaskExecutor$PrioritizedSplitRunner.process(TaskExecutor.java:505) age int The text was updated successfully, but these errors were encountered: Currently does not support date partitions, I've just sent a PR to fix it: Will your solution work : https://github.com/jsavolainen/presto/tree/hive-acid ? name string, city string, employee_id int ) PARTITIONED BY (year STRING, month STRING, day STRING) CLUSTERED BY (employee_id) INTO 256 BUCKETS. The types are incompatible and cannot be coerced. at com.facebook.presto.operator.TableScanOperator.isFinished(TableScanOperator.java:206) If this sounds about right, I can take a look into this. com.facebook.presto.spi.PrestoException: There is a mismatch between the table and partition schemas. presto 0.152. create a bucket table in hive: hive> create table employee( id int, name varchar(64), age int) clustered by (age) into 2 buckets stored as orc tblproperties('transactional'='true'); insert 2 rows to table employee: hive> insert into employee values(1,'hdfs',28),(2,'spark',17); select from hive (OK) hive> select * from employee;

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