Chaoyu Tang created HIVE-13975:
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Summary: Hive import table fails if there is no write access to
the source location
Key: HIVE-13975
URL: https://issues.apache.org/jira/browse/HIVE-13975
Project: Hive
Issue Type: Bug
Components: Import/Export
Reporter: Chaoyu Tang
Assignee: Chaoyu Tang
It seems not right that a write permission is needed on the source side for
import table because the CopyTask in import needs to create a staging directory
under the imported source directory. For a user who does not have the write
permission to the source directory, you will get error like following
{code}
Caused by: java.lang.RuntimeException: Cannot create staging directory
'hdfs://quickstart.cloudera:8020/user/hive/exp_t1/.hive-staging_hive_2016-05-26_16-38-29_453_8739265934924968327-1':
Permission denied: user=test1, access=WRITE,
inode="/user/hive/exp_t1":anonymous:supergroup:drwxrwxr-x
...
org.apache.hadoop.hdfs.DistributedFileSystem.mkdirsInternal(DistributedFileSystem.java:952)
at
org.apache.hadoop.hdfs.DistributedFileSystem.mkdirs(DistributedFileSystem.java:945)
at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:1856)
at org.apache.hadoop.hive.common.FileUtils.mkdir(FileUtils.java:518)
at org.apache.hadoop.hive.ql.Context.getStagingDir(Context.java:234)
... 23 more
{code}
There are three tasks involved in import table, CopyTask, DDLTask and MoveTask.
I wonder if the CopyTask is really needed?
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