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Date: Tue, 13 Sep 2011 21:11:13 +0000 (UTC)
From: "Carl Steinbach (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
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Subject: [jira] [Updated] (HIVE-1850) alter table set serdeproperties
 bypasses regexps checks (leaves table in a non-recoverable state?)
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     [ https://issues.apache.org/jira/browse/HIVE-1850?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Carl Steinbach updated HIVE-1850:
---------------------------------

    Fix Version/s:     (was: 0.8.0)

> alter table set serdeproperties bypasses regexps checks (leaves table in a non-recoverable state?)
> --------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-1850
>                 URL: https://issues.apache.org/jira/browse/HIVE-1850
>             Project: Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>    Affects Versions: 0.7.0
>         Environment: Trunk build from a few days ago, but seen once before with older version as well.
>            Reporter: Terje Marthinussen
>            Assignee: Amareshwari Sriramadasu
>         Attachments: patch-1850-2.txt, patch-1850.txt
>
>
> {code}
> create table aa ( test STRING )
>   ROW FORMAT SERDE 'org.apache.hadoop.hive.contrib.serde2.RegexSerDe'
>   WITH SERDEPROPERTIES ("input.regex" = "[^\\](.*)", "output.format.string" = "$1s");
> {code}
> This will fail. Great!
> {code}
> create table aa ( test STRING )
>   ROW FORMAT SERDE 'org.apache.hadoop.hive.contrib.serde2.RegexSerDe'
>   WITH SERDEPROPERTIES ("input.regex" = "(.*)", "output.format.string" = "$1s");
> {code}
> Works, no problem there.
> {code}
> alter table aa set serdeproperties ("input.regex" = "[^\\](.*)", "output.format.string" = "$1s");
> {code}
> Wups... I can set that without any problems!
> {code}
> alter table aa set serdeproperties ("input.regex" = "(.*)", "output.format.string" = "$1s");
> FAILED: Hive Internal Error: java.util.regex.PatternSyntaxException(Unclosed character class near index 7
> [^\](.*)
>        ^)
> java.util.regex.PatternSyntaxException: Unclosed character class near index 7
> [^\](.*)
>        ^
> 	at java.util.regex.Pattern.error(Pattern.java:1713)
> 	at java.util.regex.Pattern.clazz(Pattern.java:2254)
> 	at java.util.regex.Pattern.sequence(Pattern.java:1818)
> 	at java.util.regex.Pattern.expr(Pattern.java:1752)
> 	at java.util.regex.Pattern.compile(Pattern.java:1460)
> 	at java.util.regex.Pattern.<init>(Pattern.java:1133)
> 	at java.util.regex.Pattern.compile(Pattern.java:847)
> 	at org.apache.hadoop.hive.contrib.serde2.RegexSerDe.initialize(RegexSerDe.java:101)
> 	at org.apache.hadoop.hive.metastore.MetaStoreUtils.getDeserializer(MetaStoreUtils.java:199)
> 	at org.apache.hadoop.hive.ql.metadata.Table.getDeserializer(Table.java:253)
> 	at org.apache.hadoop.hive.ql.metadata.Table.getCols(Table.java:484)
> 	at org.apache.hadoop.hive.ql.metadata.Table.checkValidity(Table.java:161)
> 	at org.apache.hadoop.hive.ql.metadata.Hive.getTable(Hive.java:803)
> 	at org.apache.hadoop.hive.ql.parse.DDLSemanticAnalyzer.analyzeAlterTableSerdeProps(DDLSemanticAnalyzer.java:558)
> 	at org.apache.hadoop.hive.ql.parse.DDLSemanticAnalyzer.analyzeInternal(DDLSemanticAnalyzer.java:232)
> 	at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:238)
> 	at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:335)
> 	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:686)
> 	at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:142)
> 	at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:216)
> 	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:370)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> {code}
> After this, all further commands on the table fails, including drop table :)
> 1. The alter table command should probably check the regexp just like the create table command does
> 2. Even though the regexp is bad, it should be possible to do things like set the regexp again or drop the table.

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