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  1. Hive
  2. HIVE-8065

Support HDFS encryption functionality on Hive

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 0.13.1
    • Fix Version/s: 1.1.0
    • Component/s: None
    • Labels:

      Description

      The new encryption support on HDFS makes Hive incompatible and unusable when this feature is used.

      HDFS encryption is designed so that an user can configure different encryption zones (or directories) for multi-tenant environments. An encryption zone has an exclusive encryption key, such as AES-128 or AES-256. Because of security compliance, the HDFS does not allow to move/rename files between encryption zones. Renames are allowed only inside the same encryption zone. A copy is allowed between encryption zones.

      See HDFS-6134 for more details about HDFS encryption design.

      Hive currently uses a scratch directory (like /tmp/$user/$random). This scratch directory is used for the output of intermediate data (between MR jobs) and for the final output of the hive query which is later moved to the table directory location.

      If Hive tables are in different encryption zones than the scratch directory, then Hive won't be able to renames those files/directories, and it will make Hive unusable.

      To handle this problem, we can change the scratch directory of the query/statement to be inside the same encryption zone of the table directory location. This way, the renaming process will be successful.

      Also, for statements that move files between encryption zones (i.e. LOAD DATA), a copy may be executed instead of a rename. This will cause an overhead when copying large data files, but it won't break the encryption on Hive.

      Another security thing to consider is when using joins selects. If Hive joins different tables with different encryption key strengths, then the results of the select might break the security compliance of the tables. Let's say two tables with 128 bits and 256 bits encryption are joined, then the temporary results might be stored in the 128 bits encryption zone. This will conflict with the table encrypted with 256 bits temporary.

      To fix this, Hive should be able to select the scratch directory that is more secured/encrypted in order to save the intermediate data temporary with no compliance issues.

      For instance:

      SELECT * FROM table-aes128 t1 JOIN table-aes256 t2 WHERE t1.id == t2.id;
      
      • This should use a scratch directory (or staging directory) inside the table-aes256 table location.
      INSERT OVERWRITE TABLE table-unencrypted SELECT * FROM table-aes1;
      
      • This should use a scratch directory inside the table-aes1 location.
      FROM table-unencrypted
      INSERT OVERWRITE TABLE table-aes128 SELECT id, name
      INSERT OVERWRITE TABLE table-aes256 SELECT id, name
      
      • This should use a scratch directory on each of the tables locations.
      • The first SELECT will have its scratch directory on table-aes128 directory.
      • The second SELECT will have its scratch directory on table-aes256 directory.

        Attachments

          Issue Links

          1.
          Change Hadoop version on HIVE-8065 to 2.6-SNAPSHOT Sub-task Resolved Sergio Peña
          2.
          Commit initial encryption work Sub-task Resolved Sergio Peña
          3.
          Create unit test JIRAs Sub-task Resolved Brock Noland
          4.
          Create unit test join of encrypted and unencrypted table Sub-task Resolved Ferdinand Xu
          5.
          Create unit test join of two encrypted tables with different keys Sub-task Resolved Ferdinand Xu
          6.
          Create unit test where we insert into an encrypted table and then read from it with pig Sub-task Closed Ferdinand Xu
          7.
          Create unit test where we insert into an encrypted table and then read from it with hcatalog mapreduce Sub-task Closed Dong Chen
          8.
          Create unit test where we read from an read only encrypted table Sub-task Resolved Ferdinand Xu
          9.
          Create unit test where we read from a read only unencrypted table Sub-task Resolved Ferdinand Xu
          10.
          Create unit test where we insert into dynamically partitioned table Sub-task Resolved Dong Chen
          11.
          Create unit test where we insert into statically partitioned table Sub-task Resolved Dong Chen
          12.
          Fix permission inheritance with HDFS encryption Sub-task Resolved Szehon Ho
          13.
          Create encryption testing framework Sub-task Resolved Ferdinand Xu
          14.
          Hive should support multiple Key provider modes Sub-task Resolved Ferdinand Xu
          15.
          Fix FileUtils.copy() method to call distcp only for HDFS files (not local files) Sub-task Resolved Sergio Peña
          16.
          add createZones and listZones supports in HdfsEncryptionShim for the test purposes Sub-task Resolved Ferdinand Xu
          17.
          Allow user to read encrypted read-only tables only if the scratch directory is encrypted Sub-task Resolved Sergio Peña
          18.
          The move task does not handle properly in the case of loading data from the local file system path. Sub-task Resolved Ferdinand Xu
          19.
          Change Hadoop version on HIVE-8065 to 2.6.0 Sub-task Resolved Sergio Peña
          20.
          Fix hadoop-1 after HIVE-8864 Sub-task Resolved Szehon Ho
          21.
          Revert HIVE-8604 that uses the non-implemented KeyProviderFactory.get() method. Sub-task Resolved Sergio Peña
          22.
          Enhance encryption testing framework to allow create keys & zones inside .q files Sub-task Resolved Sergio Peña
          23.
          Improve the mask pattern in QTestUtil to save partial directory info in test result Sub-task Resolved Dong Chen
          24.
          Encryption keys deletion need to be flushed so that it updates the JKS file Sub-task Resolved Sergio Peña
          25.
          We should throw an error on Hadoop23Shims.createKey() if the key already exists Sub-task Resolved Sergio Peña
          26.
          Delete default encrypted databases created by TestEncryptedHDFSCliDriver Sub-task Resolved Sergio Peña
          27.
          enable join test for encrypted and unencrypted tables based on the new test work flow Sub-task Resolved Ferdinand Xu
          28.
          enable the unit test for inserting into dynamically partitioned table with new crypto command Sub-task Resolved Dong Chen
          29.
          enable unit test for inserting into statically partitioned table with the crypto command Sub-task Resolved Dong Chen
          30.
          Merge trunk into encryption branch (1/3/2015) Sub-task Resolved Brock Noland
          31.
          Incompatible output format for prehook according to the encryption changes Sub-task Resolved Ferdinand Xu
          32.
          Update the output files for the encryption qtests since the output format changed Sub-task Resolved Dong Chen
          33.
          Merge encryption branch to trunk Sub-task Resolved Brock Noland
          34.
          Hive fails when LOCATION does not beging with hdfs:// due to encryption changes Sub-task Resolved Sergio Peña
          35.
          Hive with encryption throws NPE to fs path without schema Sub-task Resolved Chaoyu Tang
          36.
          Exclude encryption related cases from TestCliDriver Sub-task Resolved Ferdinand Xu
          37.
          TestEncryptedHDFSCliDriver get exception "Could not execute test command" for encryption test cases Sub-task Resolved Dong Chen
          38.
          The Arguments of CRYPTO command is not parsed correctly in QTestUtil.executeTestCommand() Sub-task Resolved Dong Chen
          39.
          Improve encryption related test cases Sub-task Resolved Dong Chen
          40.
          The hdfsEncryptionShim does not handle the relative path well based on hadoop 2.6 Sub-task Resolved Ferdinand Xu
          41.
          The move task doesn't work for inserting overwrite a local directory in test mode Sub-task Resolved Ferdinand Xu
          42.
          Add clean up code in some encryption related test cases Sub-task Resolved Dong Chen
          43.
          Only 3 encryption test cases was run. The test configuration is not correct Sub-task Resolved Dong Chen
          44.
          Use metastore warehouse dir variable from conf instead of hard coded dir in encryption test Sub-task Resolved Dong Chen
          45.
          Refine the logic for the isSub method to support local file in HIVE.java Sub-task Resolved Ferdinand Xu
          46.
          Handle the case of insert overwrite statement with a qualified path that the destination path does not have a schema. Sub-task Resolved Ferdinand Xu
          47.
          Tests cannot move files due to change on HIVE-9325 Sub-task Resolved Sergio Peña
          48.
          The qtest can't handle the statements which contains semicolons in qfile Sub-task Resolved Ferdinand Xu
          49.
          Enable the unit tests for the TestCommandProcessorFactory after adding crypto command for the test purpose Sub-task Resolved Ferdinand Xu
          50.
          Remove the schema in the getQualifiedPathWithoutSchemeAndAuthority method Sub-task Resolved Ferdinand Xu
          51.
          Remove keys in the cleanup methods for encryption related qtest Sub-task Resolved Ferdinand Xu
          52.
          Fail to handle the case that a qfile contains a semicolon in the annotation Sub-task Resolved Dong Chen
          53.
          smb_mapjoin_11.q needs an update post encryption work Sub-task Resolved Brock Noland
          54.
          Fix TestHBaseCliDriver hbase_handler_bulk.q [Encryption Branch] Sub-task Resolved Sergio Peña
          55.
          Fix merge issue with TestSymlinkTextInputFormat.testCombine [Encryption Branch] Sub-task Resolved Sergio Peña
          56.
          Shim the method Path.getPathWithoutSchemeAndAuthority Sub-task Resolved Dong Chen
          57.
          Encrypt mapjoin tables Sub-task Patch Available Sergio Peña
          58.
          Dropping table in an encrypted zone does not drop warehouse directory Sub-task Resolved Eugene Koifman
          59.
          Renaming tables across encryption zones renames table even though the operation throws error Sub-task Resolved Eugene Koifman
          60.
          Insert with values clause may expose data that should be encrypted Sub-task Resolved Eugene Koifman
          61.
          Fix failed qtest encryption_insert_partition_static test in Jenkin Sub-task Closed Alexander Pivovarov
          62.
          Enable the cleanup of side effect for the Encryption related qfile test Sub-task Resolved Ferdinand Xu
          63.
          Alter table drop partition queries in encrypted zone failing to remove data from HDFS Sub-task Resolved Eugene Koifman
          64.
          Test encryption_insert_partition_static.q fails with different output results on other environments Sub-task Closed Sergio Peña
          65.
          Check of fs.trash.interval in HiveMetaStore should be consistent with Trash.moveToAppropriateTrash() Sub-task Open Unassigned
          66.
          Dropping a database in an encryption zone with CASCADE and trash enabled fails Sub-task Closed Sahil Takiar
          67.
          update encryption_move_tbl.q when switching Hive to use Hadoop 2.7 Sub-task Resolved Eugene Koifman

            Activity

              People

              • Assignee:
                spena Sergio Peña
                Reporter:
                spena Sergio Peña
              • Votes:
                1 Vote for this issue
                Watchers:
                20 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: