Github user microhello commented on the pull request:
https://github.com/apache/spark/pull/10442#issuecomment-167493888
@srowen
When I use [facebook/swift](https://github.com/facebook/swift) with spark
1.5.2, throw following exception, so I need add
`com.google.common.base.AbstractIterator` exceptions to Guava relocation .
```java
Exception in thread "main" java.lang.IllegalAccessError: class
com.google.common.base.Optional$1$1 cannot access its superclass
org.spark-project.guava.base.AbstractIterator
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at com.google.common.base.Optional$1.iterator(Optional.java:223)
at com.google.common.collect.ImmutableSet.copyOf(ImmutableSet.java:300)
at
com.facebook.swift.codec.metadata.AbstractThriftMetadataBuilder.inferThriftFieldIds(AbstractThriftMetadataBuilder.java:566)
at
com.facebook.swift.codec.metadata.AbstractThriftMetadataBuilder.inferThriftFieldIds(AbstractThriftMetadataBuilder.java:542)
at
com.facebook.swift.codec.metadata.AbstractThriftMetadataBuilder.normalizeThriftFields(AbstractThriftMetadataBuilder.java:483)
at
com.facebook.swift.codec.metadata.ThriftStructMetadataBuilder.<init>(ThriftStructMetadataBuilder.java:48)
at
com.facebook.swift.codec.metadata.ThriftCatalog.extractThriftStructMetadata(ThriftCatalog.java:542)
at
com.facebook.swift.codec.metadata.ThriftCatalog.getThriftStructMetadata(ThriftCatalog.java:408)
at
com.facebook.swift.codec.metadata.ThriftCatalog.getThriftTypeUncached(ThriftCatalog.java:283)
at
com.facebook.swift.codec.metadata.ThriftCatalog.getThriftType(ThriftCatalog.java:215)
at
com.facebook.swift.service.metadata.ThriftMethodMetadata.<init>(ThriftMethodMetadata.java:90)
at
com.facebook.swift.service.metadata.ThriftServiceMetadata.<init>(ThriftServiceMetadata.java:73)
at
com.facebook.swift.service.ThriftServiceProcessor.<init>(ThriftServiceProcessor.java:76)
at
com.facebook.swift.service.ThriftServiceProcessor.<init>(ThriftServiceProcessor.java:65)
```
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