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From "Szehon Ho (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-10206) Improve Alter Table to not initialize Serde unnecessarily
Date Sat, 04 Apr 2015 00:29:33 GMT

     [ https://issues.apache.org/jira/browse/HIVE-10206?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Szehon Ho updated HIVE-10206:
-----------------------------
    Component/s:     (was: File Formats)
                 Serializers/Deserializers
       Priority: Minor  (was: Major)
     Issue Type: Improvement  (was: Bug)
        Summary: Improve Alter Table to not initialize Serde unnecessarily  (was: Cannot modify
Avro table properties if existing properties are invalid)

Changing the name to reflect the fact that its fixed in 1.2.0 and what the patch would do.

> Improve Alter Table to not initialize Serde unnecessarily
> ---------------------------------------------------------
>
>                 Key: HIVE-10206
>                 URL: https://issues.apache.org/jira/browse/HIVE-10206
>             Project: Hive
>          Issue Type: Improvement
>          Components: Serializers/Deserializers
>    Affects Versions: 1.1.0
>            Reporter: Szehon Ho
>            Assignee: Ferdinand Xu
>            Priority: Minor
>
> Create an avro table with an external avsc file like:
> {noformat}
> CREATE  TABLE test(...)
> ROW FORMAT SERDE 
>   'org.apache.hadoop.hive.serde2.avro.AvroSerDe' 
> STORED AS INPUTFORMAT 
>   'org.apache.hadoop.hive.ql.io.avro.AvroContainerInputFormat' 
> OUTPUTFORMAT 
>   'org.apache.hadoop.hive.ql.io.avro.AvroContainerOutputFormat'
> TBLPROPERTIES (
>   'avro.schema.url'='file:///Users/szehon/Temp/test.avsc', 
>   'kite.compression.type'='snappy', 
>   'transient_lastDdlTime'='1427996456')
> {noformat}
> Delete test.avsc file.
> Try to modify the table properties:
> {noformat}
> alter table test set tblproperties ('avro.schema.url'='file:///Users/szehon/Temp/test2.avsc');
> {noformat}
> Will throw an exception like AvroSerdeException:
> {noformat}
>   at org.apache.hadoop.hive.serde2.avro.AvroSerdeUtils.determineSchemaOrThrowException(AvroSerdeUtils.java:119)
> 	  at org.apache.hadoop.hive.serde2.avro.AvroSerDe.determineSchemaOrReturnErrorSchema(AvroSerDe.java:163)
> 	  at org.apache.hadoop.hive.serde2.avro.AvroSerDe.initialize(AvroSerDe.java:101)
> 	  at org.apache.hadoop.hive.serde2.avro.AvroSerDe.initialize(AvroSerDe.java:78)
> 	  at org.apache.hadoop.hive.serde2.SerDeUtils.initializeSerDe(SerDeUtils.java:520)
> 	  at org.apache.hadoop.hive.metastore.MetaStoreUtils.getDeserializer(MetaStoreUtils.java:377)
> 	  at org.apache.hadoop.hive.ql.metadata.Table.getDeserializerFromMetaStore(Table.java:274)
> 	  at org.apache.hadoop.hive.ql.metadata.Table.getDeserializer(Table.java:256)
> 	  at org.apache.hadoop.hive.ql.metadata.Table.getCols(Table.java:595)
> 	  at org.apache.hadoop.hive.ql.exec.DDLTask.alterTableOrSinglePartition(DDLTask.java:3383)
> 	  at org.apache.hadoop.hive.ql.exec.DDLTask.alterTable(DDLTask.java:3340)
> 	  at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:332)
> 	  at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:160)
> 	  at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:88)
> 	  at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1638)
> 	  at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1397)
> 	  at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1181)
> 	  at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1047)
> 	  at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1037)
> 	  at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:207)
> 	  at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:159)
> 	  at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:370)
> 	  at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:754)
> 	  at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:675)
> 	  at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:615)
> 	  at sun.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-1)
> 	  at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	  at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	  at java.lang.reflect.Method.invoke(Method.java:606)
> 	  at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
> 	  at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
> {noformat}



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