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https://issues.apache.org/jira/browse/HIVE-21206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16764829#comment-16764829
 ] 

Hive QA commented on HIVE-21206:
--------------------------------

| (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 
 7s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  1m  
5s{color} | {color:green} master passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
39s{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 2298 extant Findbugs warnings. 
{color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  1m  
0s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  1m 
26s{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 
39s{color} | {color:red} ql: The patch generated 1 new + 15 unchanged - 1 fixed 
= 16 total (was 16) {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}  4m  
7s{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 
14s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 23m 32s{color} | 
{color:black} {color} |
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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-16010/dev-support/hive-personality.sh
 |
| git revision | master / 4ddc9de |
| Default Java | 1.8.0_111 |
| findbugs | v3.0.0 |
| checkstyle | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-16010/yetus/diff-checkstyle-ql.txt
 |
| modules | C: ql U: ql |
| Console output | 
http://104.198.109.242/logs//PreCommit-HIVE-Build-16010/yetus.txt |
| Powered by | Apache Yetus    http://yetus.apache.org |


This message was automatically generated.



> Bootstrap replication is slow as it opens lot of metastore connections.
> -----------------------------------------------------------------------
>
>                 Key: HIVE-21206
>                 URL: https://issues.apache.org/jira/browse/HIVE-21206
>             Project: Hive
>          Issue Type: Bug
>          Components: repl
>    Affects Versions: 4.0.0
>            Reporter: Sankar Hariappan
>            Assignee: Sankar Hariappan
>            Priority: Major
>              Labels: DR, pull-request-available, replication
>         Attachments: HIVE-21206.01.patch
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Hive bootstrap replication of 1TB data onprem to onprem in Hive3 is running 
> slower compared to Hive2.
> Time taken for bootstrap replication of table with 1000 partitions are as 
> below:
> ||    Hive2- Hive2    ||  Hive3 - Hive3   ||
> |Bootstrap: 7m| BootStrap: 17m |
> Every MoveTask is closing and opening new metastore connection which is 
> causing slow down.
> {code}
> 2019-02-08T12:28:30,174 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> ql.Driver (:()) - Starting task [Stage-5:MOVE] in serial mode
> 2019-02-08T12:28:30,177 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> exec.Task (:()) - Loading data to table nondefault.nondefault_table1 from 
> hdfs://mycluster1/warehouse/tablespace/managed/hive/nondefault.db/nondefault_table1/.hive-staging_hive_2019-02-08_12-28-23_584_1482331698286040936-3/-ext-10001
> 2019-02-08T12:28:30,189 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> metastore.HiveMetaStoreClient (:()) - Trying to connect to metastore with URI 
> thrift://ctr-e139-1542663976389-62755-01-000014.hwx.site:9083
> 2019-02-08T12:28:30,189 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> metastore.HiveMetaStoreClient (:()) - HMSC::open(): Could not find delegation 
> token. Creating KERBEROS-based thrift connection.
> 2019-02-08T12:28:30,206 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> metastore.HiveMetaStoreClient (:()) - Opened a connection to metastore, 
> current connections: 4
> 2019-02-08T12:28:30,206 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> metastore.HiveMetaStoreClient (:()) - Connected to metastore.
> 2019-02-08T12:28:30,206 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> metastore.RetryingMetaStoreClient (:()) - RetryingMetaStoreClient proxy=class 
> org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient 
> ugi=hive/ctr-e139-1542663976389-62755-01-000014.hwx.s...@hwqe.hortonworks.com 
> (auth:KERBEROS) retries=24 delay=5 lifetime=0
> 2019-02-08T12:28:30,325 INFO  
> [org.apache.ranger.audit.queue.AuditBatchQueue1]: provider.BaseAuditHandler 
> (:()) - Audit Status Log: name=hiveServer2.async.multi_dest.batch, 
> finalDestination=hiveServer2.async.multi_dest.batch.solr, interval=01:00.002 
> minutes, events=2, succcessCount=1, totalEvents=56, totalSuccessCount=25
> 2019-02-08T12:28:30,520 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> common.FileUtils (FileUtils.java:mkdir(580)) - Creating directory if it 
> doesn't exist: 
> hdfs://mycluster1/warehouse/tablespace/managed/hive/nondefault.db/nondefault_table1/base_0000001
> 2019-02-08T12:28:31,245 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> ql.Driver (:()) - Starting task [Stage-11:MOVE] in serial mode
> 2019-02-08T12:28:31,245 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> metastore.HiveMetaStoreClient (:()) - Closed a connection to metastore, 
> current connections: 3
> 2019-02-08T12:28:31,246 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> exec.Task (:()) - Loading data to table nondefault.nondefault_table2 from 
> hdfs://mycluster1/warehouse/tablespace/managed/hive/nondefault.db/nondefault_table2/.hive-staging_hive_2019-02-08_12-28-23_810_7457138692783022870-3/-ext-10002
> 2019-02-08T12:28:31,327 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> metastore.HiveMetaStoreClient (:()) - Trying to connect to metastore with URI 
> thrift://ctr-e139-1542663976389-62755-01-000014.hwx.site:9083
> 2019-02-08T12:28:31,327 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> metastore.HiveMetaStoreClient (:()) - HMSC::open(): Could not find delegation 
> token. Creating KERBEROS-based thrift connection.
> 2019-02-08T12:28:31,336 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> metastore.HiveMetaStoreClient (:()) - Opened a connection to metastore, 
> current connections: 4
> 2019-02-08T12:28:31,337 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> metastore.HiveMetaStoreClient (:()) - Connected to metastore.
> 2019-02-08T12:28:31,337 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> metastore.RetryingMetaStoreClient (:()) - RetryingMetaStoreClient proxy=class 
> org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient 
> ugi=hive/ctr-e139-1542663976389-62755-01-000014.hwx.s...@hwqe.hortonworks.com 
> (auth:KERBEROS) retries=24 delay=5 lifetime=0
> 2019-02-08T12:28:31,642 INFO  [HiveServer2-Background-Pool: Thread-1134]: 
> common.FileUtils (FileUtils.java:mkdir(580)) - Creating directory if it 
> doesn't exist: 
> hdfs://mycluster1/warehouse/tablespace/managed/hive/nondefault.db/nondefault_table2/base_0000001
> {code}



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