Hive table with multiple SerDe
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We have one HIVE table that is partitioned by date. It has currently Sequence file format, I want to convert it into Parquet Table.
Is it possible that we have new Partition with Parquet Serde, and older with Sequence format, so that I don't need to backfill it?
hive
asked Jan 31 '18 at 18:07
rajnishrajnish
494615
add a comment |
0
We have one HIVE table that is partitioned by date. It has currently Sequence file format, I want to convert it into Parquet Table.
Is it possible that we have new Partition with Parquet Serde, and older with Sequence format, so that I don't need to backfill it?
hive
asked Jan 31 '18 at 18:07
rajnishrajnish
494615
Why not make a separate table?CREATE TABLE t2 LIKE t STORED AS PARQUET?
– cricket_007
Jan 31 '18 at 22:43
@cricket_007 But then I need to backfill it, by converting Sequence files to Parquet files ( For 2-3 year of history data) . Also it will be different tablename that could break pipeline (that could be fixed by multiple ways)
– rajnish
Feb 1 '18 at 16:44
You cannot mix serdes. It's a table level setting, not partition level
– cricket_007
Feb 1 '18 at 18:39
add a comment |
0
0
0
We have one HIVE table that is partitioned by date. It has currently Sequence file format, I want to convert it into Parquet Table.
Is it possible that we have new Partition with Parquet Serde, and older with Sequence format, so that I don't need to backfill it?
hive
asked Jan 31 '18 at 18:07
rajnishrajnish
494615
We have one HIVE table that is partitioned by date. It has currently Sequence file format, I want to convert it into Parquet Table.
Is it possible that we have new Partition with Parquet Serde, and older with Sequence format, so that I don't need to backfill it?
hive
hive
asked Jan 31 '18 at 18:07
rajnishrajnish
494615
asked Jan 31 '18 at 18:07
rajnishrajnish
494615
asked Jan 31 '18 at 18:07
rajnishrajnish
494615
asked Jan 31 '18 at 18:07
rajnishrajnish
494615
asked Jan 31 '18 at 18:07
rajnishrajnish
494615
494615
Why not make a separate table?CREATE TABLE t2 LIKE t STORED AS PARQUET?
– cricket_007
Jan 31 '18 at 22:43
@cricket_007 But then I need to backfill it, by converting Sequence files to Parquet files ( For 2-3 year of history data) . Also it will be different tablename that could break pipeline (that could be fixed by multiple ways)
– rajnish
Feb 1 '18 at 16:44
You cannot mix serdes. It's a table level setting, not partition level
– cricket_007
Feb 1 '18 at 18:39
add a comment |
Why not make a separate table?CREATE TABLE t2 LIKE t STORED AS PARQUET?
– cricket_007
Jan 31 '18 at 22:43
@cricket_007 But then I need to backfill it, by converting Sequence files to Parquet files ( For 2-3 year of history data) . Also it will be different tablename that could break pipeline (that could be fixed by multiple ways)
– rajnish
Feb 1 '18 at 16:44
You cannot mix serdes. It's a table level setting, not partition level
– cricket_007
Feb 1 '18 at 18:39
Why not make a separate table?
CREATE TABLE t2 LIKE t STORED AS PARQUET?– cricket_007
Jan 31 '18 at 22:43
Why not make a separate table?
CREATE TABLE t2 LIKE t STORED AS PARQUET?– cricket_007
Jan 31 '18 at 22:43
@cricket_007 But then I need to backfill it, by converting Sequence files to Parquet files ( For 2-3 year of history data) . Also it will be different tablename that could break pipeline (that could be fixed by multiple ways)
– rajnish
Feb 1 '18 at 16:44
@cricket_007 But then I need to backfill it, by converting Sequence files to Parquet files ( For 2-3 year of history data) . Also it will be different tablename that could break pipeline (that could be fixed by multiple ways)
– rajnish
Feb 1 '18 at 16:44
You cannot mix serdes. It's a table level setting, not partition level
– cricket_007
Feb 1 '18 at 18:39
You cannot mix serdes. It's a table level setting, not partition level
– cricket_007
Feb 1 '18 at 18:39
add a comment |
1 Answer
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create a external empty table with default serde(LazySimpleSerDe) and default stored(textfile).
add partition.
alter partition set fileformat(or set serde).
Hive LanguageManual DDL
CREATE EXTERNAL TABLE test(ip string, localTime string )
PARTITIONED BY (partition__hive__ STRING) location '/tmp/table/empty';
alter table test add partition (partition__hive__='p_0') location 'hdfs://hdfsTest/hive/table/test/2018/11/21/08';
alter table test partition (partition__hive__='p_0') SET FILEFORMAT parquet;
alter table test add partition (partition__hive__='p_1') location 'hdfs://hdfsTest/hive/table/test/2018/11/21/09';
alter table test partition (partition__hive__='p_1') SET SERDE 'org.apache.hive.hcatalog.data.JsonSerDe';
answered Nov 21 '18 at 9:03
Tianwang LiTianwang Li
11
Maybe you can explain with few sentences
– vahdet
Nov 21 '18 at 9:07
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
create a external empty table with default serde(LazySimpleSerDe) and default stored(textfile).
add partition.
alter partition set fileformat(or set serde).
Hive LanguageManual DDL
CREATE EXTERNAL TABLE test(ip string, localTime string )
PARTITIONED BY (partition__hive__ STRING) location '/tmp/table/empty';
alter table test add partition (partition__hive__='p_0') location 'hdfs://hdfsTest/hive/table/test/2018/11/21/08';
alter table test partition (partition__hive__='p_0') SET FILEFORMAT parquet;
alter table test add partition (partition__hive__='p_1') location 'hdfs://hdfsTest/hive/table/test/2018/11/21/09';
alter table test partition (partition__hive__='p_1') SET SERDE 'org.apache.hive.hcatalog.data.JsonSerDe';
answered Nov 21 '18 at 9:03
Tianwang LiTianwang Li
11
Maybe you can explain with few sentences
– vahdet
Nov 21 '18 at 9:07
add a comment |
0
create a external empty table with default serde(LazySimpleSerDe) and default stored(textfile).
add partition.
alter partition set fileformat(or set serde).
Hive LanguageManual DDL
CREATE EXTERNAL TABLE test(ip string, localTime string )
PARTITIONED BY (partition__hive__ STRING) location '/tmp/table/empty';
alter table test add partition (partition__hive__='p_0') location 'hdfs://hdfsTest/hive/table/test/2018/11/21/08';
alter table test partition (partition__hive__='p_0') SET FILEFORMAT parquet;
alter table test add partition (partition__hive__='p_1') location 'hdfs://hdfsTest/hive/table/test/2018/11/21/09';
alter table test partition (partition__hive__='p_1') SET SERDE 'org.apache.hive.hcatalog.data.JsonSerDe';
answered Nov 21 '18 at 9:03
Tianwang LiTianwang Li
11
Maybe you can explain with few sentences
– vahdet
Nov 21 '18 at 9:07
add a comment |
0
0
0
create a external empty table with default serde(LazySimpleSerDe) and default stored(textfile).
add partition.
alter partition set fileformat(or set serde).
Hive LanguageManual DDL
CREATE EXTERNAL TABLE test(ip string, localTime string )
PARTITIONED BY (partition__hive__ STRING) location '/tmp/table/empty';
alter table test add partition (partition__hive__='p_0') location 'hdfs://hdfsTest/hive/table/test/2018/11/21/08';
alter table test partition (partition__hive__='p_0') SET FILEFORMAT parquet;
alter table test add partition (partition__hive__='p_1') location 'hdfs://hdfsTest/hive/table/test/2018/11/21/09';
alter table test partition (partition__hive__='p_1') SET SERDE 'org.apache.hive.hcatalog.data.JsonSerDe';
answered Nov 21 '18 at 9:03
Tianwang LiTianwang Li
11
create a external empty table with default serde(LazySimpleSerDe) and default stored(textfile).
add partition.
alter partition set fileformat(or set serde).
Hive LanguageManual DDL
CREATE EXTERNAL TABLE test(ip string, localTime string )
PARTITIONED BY (partition__hive__ STRING) location '/tmp/table/empty';
alter table test add partition (partition__hive__='p_0') location 'hdfs://hdfsTest/hive/table/test/2018/11/21/08';
alter table test partition (partition__hive__='p_0') SET FILEFORMAT parquet;
alter table test add partition (partition__hive__='p_1') location 'hdfs://hdfsTest/hive/table/test/2018/11/21/09';
alter table test partition (partition__hive__='p_1') SET SERDE 'org.apache.hive.hcatalog.data.JsonSerDe';
answered Nov 21 '18 at 9:03
Tianwang LiTianwang Li
11
edited Nov 22 '18 at 1:37
answered Nov 21 '18 at 9:03
Tianwang LiTianwang Li
11
answered Nov 21 '18 at 9:03
Tianwang LiTianwang Li
11
answered Nov 21 '18 at 9:03
Tianwang LiTianwang Li
11
11
Maybe you can explain with few sentences
– vahdet
Nov 21 '18 at 9:07
add a comment |
Maybe you can explain with few sentences
– vahdet
Nov 21 '18 at 9:07
Maybe you can explain with few sentences
– vahdet
Nov 21 '18 at 9:07
Maybe you can explain with few sentences
– vahdet
Nov 21 '18 at 9:07
add a comment |
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Why not make a separate table?
CREATE TABLE t2 LIKE t STORED AS PARQUET?– cricket_007
Jan 31 '18 at 22:43
@cricket_007 But then I need to backfill it, by converting Sequence files to Parquet files ( For 2-3 year of history data) . Also it will be different tablename that could break pipeline (that could be fixed by multiple ways)
– rajnish
Feb 1 '18 at 16:44
You cannot mix serdes. It's a table level setting, not partition level
– cricket_007
Feb 1 '18 at 18:39