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Posted to issues@hive.apache.org by "1414913854@qq.com (JIRA)" <ji...@apache.org> on 2018/04/19 16:47:00 UTC
[jira] [Assigned] (HIVE-11095) SerDeUtils another bug ,when Text
is reused
[ https://issues.apache.org/jira/browse/HIVE-11095?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
1414913854@qq.com reassigned HIVE-11095:
----------------------------------------
Assignee: 1414913854@qq.com (was: Xiaowei Wang)
> SerDeUtils another bug ,when Text is reused
> --------------------------------------------
>
> Key: HIVE-11095
> URL: https://issues.apache.org/jira/browse/HIVE-11095
> Project: Hive
> Issue Type: Bug
> Components: API, CLI
> Affects Versions: 0.14.0, 1.0.0, 1.2.0
> Environment: Hadoop 2.3.0-cdh5.0.0
> Hive 0.14
> Reporter: Xiaowei Wang
> Assignee: 1414913854@qq.com
> Priority: Major
> Fix For: 1.3.0, 2.0.0
>
> Attachments: HIVE-11095.1.patch.txt, HIVE-11095.2.patch.txt, HIVE-11095.3.patch.txt
>
>
> {noformat}
> The method transformTextFromUTF8 have a error bug, It invoke a bad method of Text,getBytes()!
> The method getBytes of Text returns the raw bytes; however, only data up to Text.length is valid.A better way is use copyBytes() if you need the returned array to be precisely the length of the data.
> But the copyBytes is added behind hadoop1.
> {noformat}
> How I found this bug？
> When i query data from a lzo table ， I found in results ： the length of the current row is always largr than the previous row， and sometimes，the current row contains the contents of the previous row。 For example ，i execute a sql ,
> {code:sql}
> select * from web_searchhub where logdate=2015061003
> {code}
> the result of sql see blow.Notice that ,the second row content contains the first row content.
> {noformat}
> INFO [03:00:05.589] HttpFrontServer::FrontSH msgRecv:Remote=/10.13.193.68:42098,session=3151,thread=254 2015061003
> INFO [03:00:05.594] <18941e66-9962-44ad-81bc-3519f47ba274> session=901,thread=223ession=3151,thread=254 2015061003
> {noformat}
> The content of origin lzo file content see below ,just 2 rows.
> {noformat}
> INFO [03:00:05.635] <b88e0473-7530-494c-82d8-e2d2ebd2666c_forweb> session=3148,thread=285
> INFO [03:00:05.635] HttpFrontServer::FrontSH msgRecv:Remote=/10.13.193.68:42095,session=3148,thread=285
> {noformat}
> I think this error is caused by the Text reuse,and I found the solutions .
> Addicational, table create sql is :
> {code:sql}
> CREATE EXTERNAL TABLE `web_searchhub`(
> `line` string)
> PARTITIONED BY (
> `logdate` string)
> ROW FORMAT DELIMITED
> FIELDS TERMINATED BY '
> U0000'
> WITH SERDEPROPERTIES (
> 'serialization.encoding'='GBK')
> STORED AS INPUTFORMAT "com.hadoop.mapred.DeprecatedLzoTextInputFormat"
> OUTPUTFORMAT "org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat";
> LOCATION
> 'viewfs://nsX/user/hive/warehouse/raw.db/web/web_searchhub'
> {code}
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