[
https://issues.apache.org/jira/browse/GORA-428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14721244#comment-14721244
]
Kevin Findlay commented on GORA-428:
------------------------------------
I have now checked version 0.7, which I should have done prior to submitting
the error! Authentication is no longer taking place in the getDB function and
the null value has
I therefore think this issue is specific to 0.5 and is a red-herring.
> Null pointer exception caused by incorrect handling of gora.mongodb.login
> values that don't validate
> ----------------------------------------------------------------------------------------------------
>
> Key: GORA-428
> URL: https://issues.apache.org/jira/browse/GORA-428
> Project: Apache Gora
> Issue Type: Bug
> Components: gora-mongodb
> Affects Versions: 0.5
> Environment: Ubuntu, Nutch2
> Reporter: Kevin Findlay
> Priority: Minor
> Fix For: 0.7
>
>
> A null pointer exception occurs when the gora.mongodb.login=nutch does not
> validate.
> Line 250 of the MongoStore class in method "private DB getDB(final String
> servers, final String dbname, final String login, final String secret) throws
> UnknownHostException" returns a null when the user is not validated.
> if (login != null && secret != null) {
> ****PROBLEM**** auth = db.authenticate(login, secret.toCharArray());
> }
> This causes the method to return a null to :
> mongoClientDB = getDB(vPropMongoServers, vPropMongoDb, vPropMongoLogin,
> vPropMongoSecret);
> In line 173 of MongoStore "public void initialize(final Class<K> keyClass,
> final Class<T> pPersistentClass, final Properties properties)"
> The code attempts to use this null value
> *****PROBLEM****
> as mongoClientColl = mongoClientDB
> .getCollection(mapping.getCollectionName());
> The solution is to check for a null point for mongoClientDB prior to use or,
> better, write specific code to report when a login to MongoDB fails due to
> authentication.
> ERROR MESSAGE
> InjectorJob: org.apache.gora.util.GoraException:
> java.lang.NullPointerException
> at
> org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:169)
> at
> org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:137)
> at
> org.apache.nutch.storage.StorageUtils.createWebStore(StorageUtils.java:78)
> at org.apache.nutch.crawl.InjectorJob.run(InjectorJob.java:218)
> at org.apache.nutch.crawl.InjectorJob.inject(InjectorJob.java:252)
> at org.apache.nutch.crawl.InjectorJob.run(InjectorJob.java:275)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> at org.apache.nutch.crawl.InjectorJob.main(InjectorJob.java:284)
> Caused by: java.lang.NullPointerException
> at
> org.apache.gora.mongodb.store.MongoStore.initialize(MongoStore.java:173)
> at
> org.apache.gora.store.DataStoreFactory.initializeDataStore(DataStoreFactory.java:104)
> at
> org.apache.gora.store.DataStoreFactory.createDataStore(DataStoreFactory.java:163)
> ... 7 more
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
