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https://issues.apache.org/jira/browse/HBASE-17935?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15973528#comment-15973528
]
Ted Yu commented on HBASE-17935:
--------------------------------
For unit test, refer to TestFastFail where HBASE_CLIENT_FAST_FAIL_MODE_ENABLED
is set true.
See if namespaceExists() triggers the NPE.
> NPE when using PreemptiveFastFailInterceptor with HBaseAdmin client
> -------------------------------------------------------------------
>
> Key: HBASE-17935
> URL: https://issues.apache.org/jira/browse/HBASE-17935
> Project: HBase
> Issue Type: Bug
> Components: Client
> Affects Versions: 1.1.2
> Reporter: Robert Yokota
> Assignee: Robert Yokota
> Priority: Minor
> Attachments: HBASE-17935.master.001.patch
>
>
> When setting hbase.client.fast.fail.mode.enabled=true and using the admin
> client, got a NPE:
> java.lang.NullPointerException
> at
> java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:936)
> at
> org.apache.hadoop.hbase.client.PreemptiveFastFailInterceptor.intercept(PreemptiveFastFailInterceptor.java:115)
> at
> org.apache.hadoop.hbase.client.PreemptiveFastFailInterceptor.intercept(PreemptiveFastFailInterceptor.java:376)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithRetries(RpcRetryingCaller.java:135)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:4297)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin.executeCallable(HBaseAdmin.java:4289)
> at
> org.apache.hadoop.hbase.client.HBaseAdmin.getNamespaceDescriptor(HBaseAdmin.java:3009)
> at
> com.yammer.calmie.store.hbase.HBaseConnectionFactory.namespaceExists(HBaseConnectionFactory.java:146)
> at
> com.yammer.calmie.store.hbase.HBaseConnectionFactory.createHTable(HBaseConnectionFactory.java:116)
> at
> com.yammer.calmie.store.hbase.HBaseConnectionFactory.declareTable(HBaseConnectionFactory.java:97)
> at
> com.yammer.feedie.core.index.calmie.MessageCalmieIndex.<init>(MessageCalmieIndex.java:46)
> at com.yammer.feedie.core.MessageStore.init(MessageStore.java:108)
> at com.yammer.feedie.core.MessageStore.<init>(MessageStore.java:89)
> at com.yammer.feedie.FeedieService.setup(FeedieService.java:148)
> at com.yammer.feedie.FeedieService.run(FeedieService.java:315)
> at com.yammer.feedie.FeedieService.run(FeedieService.java:65)
> at
> com.yammer.dropwizard.cli.EnvironmentCommand.run(EnvironmentCommand.java:38)
> at
> com.yammer.dropwizard.cli.ConfiguredCommand.run(ConfiguredCommand.java:58)
> at com.yammer.dropwizard.cli.Cli.run(Cli.java:53)
> at com.yammer.dropwizard.Service.run(Service.java:61)
> at com.yammer.feedie.FeedieService.main(FeedieService.java:84)
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