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Posted to issues@hive.apache.org by "Rajkumar Singh (Jira)" <ji...@apache.org> on 2019/09/27 20:50:00 UTC
[jira] [Updated] (HIVE-22255) Hive don't trigger Major Compaction
automatically if table contains all base files
[ https://issues.apache.org/jira/browse/HIVE-22255?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Rajkumar Singh updated HIVE-22255:
----------------------------------
Description:
user may run into the issue if the table consists of all base files but no delta, then the following condition will yield false and automatic major compaction will be skipped.
[https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Initiator.java#L313]
Steps to Reproduce:
# create Acid table
{code:java}
// create table myacid(id int);
{code}
# Run multiple insert table
{code:java}
// insert overwrite table myacid values(1);insert overwrite table myacid values(2),(3),(4){code}
# DFS ls output
{code:java}
// dfs -ls -R /warehouse/tablespace/managed/hive/myacid;
+----------------------------------------------------+
| DFS Output |
+----------------------------------------------------+
| drwxrwx---+ - hive hadoop 0 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001 |
| -rw-rw----+ 3 hive hadoop 1 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001/_orc_acid_version |
| -rw-rw----+ 3 hive hadoop 610 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001/bucket_00000 |
| drwxrwx---+ - hive hadoop 0 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002 |
| -rw-rw----+ 3 hive hadoop 1 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002/_orc_acid_version |
| -rw-rw----+ 3 hive hadoop 633 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002/bucket_00000 |
+----------------------------------------------------+{code}
you will see that Major compaction will not be trigger until you run alter table compact MAJOR.
was:
user may run into the issue if the table consists of all base files but no delta, then the following condition will yield false and automatic major compaction will be skipped.
[https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Initiator.java#L313]
Steps to Reproduce:
# create Acid table
{code:java}
// create table myacid(id int);
{code}
# Run multiple insert table
{code:java}
// insert overwrite table myacid values(1);insert overwrite table myacid values(2),(3),(4){code}
# DFS ls output
{code:java}
// dfs -ls -R /warehouse/tablespace/managed/hive/myacid;
+----------------------------------------------------+
| DFS Output |
+----------------------------------------------------+
| drwxrwx---+ - hive hadoop 0 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001 |
| -rw-rw----+ 3 hive hadoop 1 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001/_orc_acid_version |
| -rw-rw----+ 3 hive hadoop 610 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001/bucket_00000 |
| drwxrwx---+ - hive hadoop 0 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002 |
| -rw-rw----+ 3 hive hadoop 1 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002/_orc_acid_version |
| -rw-rw----+ 3 hive hadoop 633 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002/bucket_00000 |
+----------------------------------------------------+
{code}
> Hive don't trigger Major Compaction automatically if table contains all base files
> -----------------------------------------------------------------------------------
>
> Key: HIVE-22255
> URL: https://issues.apache.org/jira/browse/HIVE-22255
> Project: Hive
> Issue Type: Bug
> Components: Hive, Transactions
> Affects Versions: 3.1.2
> Environment: Hive-3.1.1
> Reporter: Rajkumar Singh
> Priority: Major
>
> user may run into the issue if the table consists of all base files but no delta, then the following condition will yield false and automatic major compaction will be skipped.
> [https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Initiator.java#L313]
>
> Steps to Reproduce:
> # create Acid table
> {code:java}
> // create table myacid(id int);
> {code}
> # Run multiple insert table
> {code:java}
> // insert overwrite table myacid values(1);insert overwrite table myacid values(2),(3),(4){code}
> # DFS ls output
> {code:java}
> // dfs -ls -R /warehouse/tablespace/managed/hive/myacid;
> +----------------------------------------------------+
> | DFS Output |
> +----------------------------------------------------+
> | drwxrwx---+ - hive hadoop 0 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001 |
> | -rw-rw----+ 3 hive hadoop 1 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001/_orc_acid_version |
> | -rw-rw----+ 3 hive hadoop 610 2019-09-27 16:42 /warehouse/tablespace/managed/hive/myacid/base_0000001/bucket_00000 |
> | drwxrwx---+ - hive hadoop 0 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002 |
> | -rw-rw----+ 3 hive hadoop 1 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002/_orc_acid_version |
> | -rw-rw----+ 3 hive hadoop 633 2019-09-27 16:43 /warehouse/tablespace/managed/hive/myacid/base_0000002/bucket_00000 |
> +----------------------------------------------------+{code}
>
> you will see that Major compaction will not be trigger until you run alter table compact MAJOR.
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