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https://issues.apache.org/jira/browse/HIVE-3815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13622894#comment-13622894
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Thejas M Nair commented on HIVE-3815:
-------------------------------------
The root cause of this issue (copied from the comment in patch) -
{code}
//When file system cache is disabled, you get different FileSystem objects
// for same file system, so '==' can't be used in such cases
//FileSystem api doesn't have a .equals() function implemented, so using
//the uri for comparison. FileSystem already uses uri+Configuration for
//equality in its CACHE .
{code}
> hive table rename fails if filesystem cache is disabled
> -------------------------------------------------------
>
> Key: HIVE-3815
> URL: https://issues.apache.org/jira/browse/HIVE-3815
> Project: Hive
> Issue Type: Bug
> Reporter: Thejas M Nair
> Assignee: Thejas M Nair
> Attachments: HIVE-3815.1.patch
>
>
> If fs.<filesyste>.impl.disable.cache (eg fs.hdfs.impl.disable.cache) is set
> to true, then table rename fails.
> The exception that gets thrown (though not logged!) is
> {quote}
> Caused by: InvalidOperationException(message:table new location
> hdfs://host1:8020/apps/hive/warehouse/t2 is on a different file system than
> the old location hdfs://host1:8020/apps/hive/warehouse/t1. This operation is
> not supported)
> at
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$alter_table_result$alter_table_resultStandardScheme.read(ThriftHiveMetastore.java:28825)
> at
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$alter_table_result$alter_table_resultStandardScheme.read(ThriftHiveMetastore.java:28811)
> at
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$alter_table_result.read(ThriftHiveMetastore.java:28753)
> at
> org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
> at
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.recv_alter_table(ThriftHiveMetastore.java:977)
> at
> org.apache.hadoop.hive.metastore.api.ThriftHiveMetastore$Client.alter_table(ThriftHiveMetastore.java:962)
> at
> org.apache.hadoop.hive.metastore.HiveMetaStoreClient.alter_table(HiveMetaStoreClient.java:208)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.hadoop.hive.metastore.RetryingMetaStoreClient.invoke(RetryingMetaStoreClient.java:74)
> at $Proxy7.alter_table(Unknown Source)
> at org.apache.hadoop.hive.ql.metadata.Hive.alterTable(Hive.java:373)
> ... 18 more
> {quote}
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