BELUGA BEHR created HIVE-19424:
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Summary: 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
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}
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