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https://issues.apache.org/jira/browse/HDFS-7075?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14136489#comment-14136489
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Colin Patrick McCabe commented on HDFS-7075:
--------------------------------------------
I think this should be ok since for Hadoop, the classloader we use for
{{KeyProviderFactory}} is also the classloader we want to use for loading the
{{KeyProvider}} objects. If we ever decide to use multiple classloaders, we
can revisit this.
By the way, I found that when using the JNI invocation API, our thread context
classloader is null, and our system classloader appears to have the exploded
classpaths we set in the {{CLASSPATH}} environment variable when launching the
program. I found some references indicating that the system classloader is
normally used when JNI calls {{ServiceLoader}}, but for some reason, that
doesn't seem to be the case here.
> hadoop-fuse-dfs fails because it cannot find JavaKeyStoreProvider$Factory
> -------------------------------------------------------------------------
>
> Key: HDFS-7075
> URL: https://issues.apache.org/jira/browse/HDFS-7075
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 2.6.0
> Reporter: Colin Patrick McCabe
> Assignee: Colin Patrick McCabe
> Attachments: HDFS-7075.001.patch
>
>
> hadoop-fuse-dfs fails complaining with:
> {code}
> java.util.ServiceConfigurationError:
> org.apache.hadoop.crypto.key.KeyProviderFactory: Provider
> org.apache.hadoop.crypto.key.JavaKeyStoreProvider$Factory not found
> {code}
> Here is an example of the hadoop-fuse-dfs debug output.
> {code}
> 14/09/04 13:49:04 WARN crypto.CryptoCodec: Crypto codec
> org.apache.hadoop.crypto.OpensslAesCtrCryptoCodec is not available.
> hdfsBuilderConnect(forceNewInstance=1,
> nn=hdfs://hdfs-cdh5-secure-1.vpc.cloudera.com:8020, port=0,
> kerbTicketCachePath=/tmp/krb5cc_0, userName=root) error:
> java.util.ServiceConfigurationError:
> org.apache.hadoop.crypto.key.KeyProviderFactory: Provider
> org.apache.hadoop.crypto.key.JavaKeyStoreProvider$Factory not found
> at java.util.ServiceLoader.fail(ServiceLoader.java:231)
> at java.util.ServiceLoader.access$300(ServiceLoader.java:181)
> at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:365)
> {code}
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