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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-20998) HiveStrictManagedMigration utility should update DB/Table location as last migration steps
Date Tue, 11 Dec 2018 01:21:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-20998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16715900#comment-16715900
] 

Hive QA commented on HIVE-20998:
--------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  0s{color} |
{color:green} The patch does not contain any @author tags. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  8m  6s{color}
| {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  3s{color} |
{color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 38s{color}
| {color:green} master passed {color} |
| {color:blue}0{color} | {color:blue} findbugs {color} | {color:blue}  3m 46s{color} | {color:blue}
ql in master has 2311 extant Findbugs warnings. {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 59s{color} |
{color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 22s{color}
| {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  3s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  1m  3s{color} | {color:green}
the patch passed {color} |
| {color:red}-1{color} | {color:red} checkstyle {color} | {color:red}  0m 36s{color} | {color:red}
ql: The patch generated 1 new + 51 unchanged - 0 fixed = 52 total (was 51) {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m  0s{color}
| {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  3m 59s{color} |
{color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 56s{color} |
{color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 13s{color}
| {color:green} The patch does not generate ASF License warnings. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 23m  9s{color} | {color:black}
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|| Subsystem || Report/Notes ||
| Optional Tests |  asflicense  javac  javadoc  findbugs  checkstyle  compile  |
| uname | Linux hiveptest-server-upstream 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u1 (2016-09-03)
x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /data/hiveptest/working/yetus_PreCommit-HIVE-Build-15251/dev-support/hive-personality.sh
|
| git revision | master / a6091c3 |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| checkstyle | http://104.198.109.242/logs//PreCommit-HIVE-Build-15251/yetus/diff-checkstyle-ql.txt
|
| modules | C: ql U: ql |
| Console output | http://104.198.109.242/logs//PreCommit-HIVE-Build-15251/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> HiveStrictManagedMigration utility should update DB/Table location as last migration
steps
> ------------------------------------------------------------------------------------------
>
>                 Key: HIVE-20998
>                 URL: https://issues.apache.org/jira/browse/HIVE-20998
>             Project: Hive
>          Issue Type: Sub-task
>            Reporter: Jason Dere
>            Assignee: Jason Dere
>            Priority: Major
>         Attachments: HIVE-20998.1.patch
>
>
> When processing a database or table, the HiveStrictManagedMigration utility currently
changes the database/table locations as the first step in processing that database/table.
Unfortunately if an error occurs while processing this database or table, then there may still
be migration work that needs to continue for that db/table by running the migration again.
However the migration tool only processes dbs/tables that have the old warehouse location,
then the tool will skip over the db/table when the migration is run again.
>  One fix here is to set the new location as the last step after all of the migration
work is done:
>  - The new table location will not be set until all of its partitions have been successfully
migrated.
>  - The new database location will not be set until all of its tables have been successfully
migrated.
> For existing migrations that failed with an error, the following workaround can be done
so that the db/tables can be re-processed by the migration tool:
>  1) Use the migration tool logs to find which databases/tables failed during processing.
>  2) For each db/table, change location of of the database and table back to old location:
>  ALTER DATABASE tpcds_bin_partitioned_orc_10 SET LOCATION 'hdfs://ns1/apps/hive/warehouse/tpcds_bin_partitioned_orc_10.db';
>  ALTER TABLE tpcds_bin_partitioned_orc_10.store_sales SET LOCATION 'hdfs://ns1/apps/hive/warehouse/tpcds_bin_partitioned_orc_10.db/store_sales';
>  2) Rerun the migration tool



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