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https://issues.apache.org/jira/browse/HADOOP-15545?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16514045#comment-16514045
 ] 

Steve Loughran commented on HADOOP-15545:
-----------------------------------------

{code}
Test filesystem abfs://user@something/
======================================

This call tests a set of operations against the filesystem
Starting with some read operations, then trying to write

java.lang.StringIndexOutOfBoundsException: String index out of range: -1
        at java.lang.String.substring(String.java:1967)
        at 
org.apache.hadoop.fs.azurebfs.services.AbfsHttpClientFactoryImpl.create(AbfsHttpClientFactoryImpl.java:111)
        at 
org.apache.hadoop.fs.azurebfs.services.AbfsHttpServiceImpl.getOrCreateClient(AbfsHttpServiceImpl.java:518)
        at 
org.apache.hadoop.fs.azurebfs.services.AbfsHttpServiceImpl.createDirectory(AbfsHttpServiceImpl.java:237)
        at 
org.apache.hadoop.fs.azurebfs.AzureBlobFileSystem.mkdirs(AzureBlobFileSystem.java:319)
        at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:2326)
        at 
org.apache.hadoop.fs.azurebfs.AzureBlobFileSystem.initialize(AzureBlobFileSystem.java:128)
        at 
org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:3354)
        at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:124)
        at 
org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:3403)
        at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:3371)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:477)
        at org.apache.hadoop.fs.Path.getFileSystem(Path.java:361)
        at 
org.apache.hadoop.fs.store.diag.StoreDiag.executeFileSystemOperations(StoreDiag.java:454)
        at org.apache.hadoop.fs.store.diag.StoreDiag.run(StoreDiag.java:223)
        at org.apache.hadoop.fs.store.diag.StoreDiag.run(StoreDiag.java:194)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
        at org.apache.hadoop.fs.store.diag.StoreDiag.exec(StoreDiag.java:659)
        at org.apache.hadoop.fs.store.diag.StoreDiag.main(StoreDiag.java:668)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hadoop.util.RunJar.run(RunJar.java:318)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:232)
2018-06-15 17:21:05,153 [main] INFO  util.ExitUtil 
(ExitUtil.java:terminate(210)) - Exiting with status -1: 
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
{code}

> ABFS initialize() throws string out of bounds exception of the URI isn't 
> fully qualified
> ----------------------------------------------------------------------------------------
>
>                 Key: HADOOP-15545
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15545
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/azure
>            Reporter: Steve Loughran
>            Priority: Minor
>
> if you try to connect to a store like {{abfs://user@something/}} you'll see a 
> StringIndexOutOfBoundsException....better to have something useful like "not 
> a FQDN"



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