[
https://issues.apache.org/jira/browse/HIVE-19424?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16474806#comment-16474806
]
Alice Fan edited comment on HIVE-19424 at 5/15/18 6:07 AM:
-----------------------------------------------------------
[~belugabehr] Thanks for the feedback. While using HIVE QL to create a table,
it automatically generates "org.apache.hadoop.mapred.TextInputFormat" for
input_format in HIVE. I manually tested it by updating input_format = null at
mysql locally, so the patch is able to solve the null input_format issue.
However, it is not able to update the Input_format by using HIVE Query
directly.
was (Author: afan):
[~belugabehr] Thanks for the feedback. While using HIVE QL to create a table,
it automatically generate "org.apache.hadoop.mapred.TextInputFormat" for
input_format in HIVE. I manually tested it by updating input_format = null at
mysql locally, so the patch is able to solve the null input_format issue.
However, it is not able to update the Input_format by using HIVE Query
directly.
> NPE In MetaDataFormatters
> -------------------------
>
> Key: HIVE-19424
> URL: https://issues.apache.org/jira/browse/HIVE-19424
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2, Metastore, Standalone Metastore
> Affects Versions: 3.0.0, 2.4.0
> Reporter: BELUGA BEHR
> Assignee: Alice Fan
> Priority: Minor
> Attachments: HIVE-19424.1.patch, HIVE-19424.2.patch
>
>
> h2. Overview
> According to the Hive Schema definition, a table's {{INPUT_FORMAT}} class can
> be set to NULL. However, there are places in the code where we do not
> account for this NULL value, in particular the {{MetaDataFormatters}} classes
> {{TextMetaDataFormatter}} and {{JsonMetaDataFormatter}}. In addition, there
> is no debug level logging in the {{MetaDataFormatters}} classes to tell me
> which table in particular is causing the problem.
> {code:sql|title=hive-schema-2.2.0.mysql.sql}
> CREATE TABLE IF NOT EXISTS `SDS` (
> `SD_ID` bigint(20) NOT NULL,
> `CD_ID` bigint(20) DEFAULT NULL,
> `INPUT_FORMAT` varchar(4000) CHARACTER SET latin1 COLLATE latin1_bin
> DEFAULT NULL,
> `IS_COMPRESSED` bit(1) NOT NULL,
> ...
> {code}
> {code:java|title=TextMetaDataFormatter.java}
> // Not checking for a null return from getInputFormatClass
> inputFormattCls = par.getInputFormatClass().getName();
> outputFormattCls = par.getOutputFormatClass().getName();
> {code}
> h2. Reproduction
> {code:sql}
> -- MySQL Backend
> update SDS SET INPUT_FORMAT=NULL WHERE SD_ID=XXX;
> {code}
> {code}
> // Hive
> SHOW TABLE EXTENDED FROM default LIKE '*';
> // HS2 Logs
> [HiveServer2-Background-Pool: Thread-464]: Error running hive query:
> org.apache.hive.service.cli.HiveSQLException: Error while processing
> statement: FAILED: Execution Error, return code 1 from
> org.apache.hadoop.hive.ql.exec.DDLTask. Exception while processing show table
> status
> at
> org.apache.hive.service.cli.operation.Operation.toSQLException(Operation.java:400)
> at
> org.apache.hive.service.cli.operation.SQLOperation.runQuery(SQLOperation.java:238)
> at
> org.apache.hive.service.cli.operation.SQLOperation.access$300(SQLOperation.java:89)
> at
> org.apache.hive.service.cli.operation.SQLOperation$3$1.run(SQLOperation.java:301)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1920)
> at
> org.apache.hive.service.cli.operation.SQLOperation$3.run(SQLOperation.java:314)
> at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Exception while
> processing show table status
> at
> org.apache.hadoop.hive.ql.exec.DDLTask.showTableStatus(DDLTask.java:3025)
> at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:405)
> at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:214)
> at
> org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:99)
> at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:2052)
> at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:1748)
> at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1501)
> at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1285)
> at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1280)
> at
> org.apache.hive.service.cli.operation.SQLOperation.runQuery(SQLOperation.java:236)
> ... 11 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.metadata.formatting.TextMetaDataFormatter.showTableStatus(TextMetaDataFormatter.java:202)
> at
> org.apache.hadoop.hive.ql.exec.DDLTask.showTableStatus(DDLTask.java:3020)
> ... 20 more
> {code}
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
