[ 
https://issues.apache.org/jira/browse/HADOOP-14604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

dingguotao updated HADOOP-14604:
--------------------------------
    Description: 
With HDFS Federation configured, the aggregation log have a default replication 
count of 1, rather than the value of dfs.replication in hdfs-site.xml 
configuration file.

Before: 
{code:java}
[op@NM-304-SA5212M4-BIGDATA-640 ~]$ hdfs dfs -ls 
/yarn/apps/op/logs/application_1498544648312_0001
Found 3 items
-rw-r-----   1 op hadoop       8270 2017-06-27 14:25 
/yarn/apps/op/logs/application_1498544648312_0001/NM-304-SA5212M4-BIGDATA-645_8041
-rw-r-----   1 op hadoop      54469 2017-06-27 14:25 
/yarn/apps/op/logs/application_1498544648312_0001/NM-304-SA5212M4-BIGDATA-646_8041
-rw-r-----   1 op hadoop       6537 2017-06-27 14:25 
/yarn/apps/op/logs/application_1498544648312_0001/NM-304-SA5212M4-BIGDATA-672_8041
{code}

The aggregation log have only 1 replication in default. But  the value of 
dfs.replication in hdfs-site.xml configuration file is 3

After apply this patch:


{code:java}
[op@NM-304-SA5212M4-BIGDATA-640 ~]$ hdfs dfs -ls 
/yarn/apps/op/logs/application_1498635214020_0001
Found 3 items
-rw-r-----   3 op hadoop       5729 2017-06-28 15:34 
/yarn/apps/op/logs/application_1498635214020_0001/NM-304-SA5212M4-BIGDATA-645_8041
-rw-r-----   3 op hadoop      38439 2017-06-28 15:34 
/yarn/apps/op/logs/application_1498635214020_0001/NM-304-SA5212M4-BIGDATA-646_8041
-rw-r-----   3 op hadoop       8270 2017-06-28 15:34 
/yarn/apps/op/logs/application_1498635214020_0001/NM-304-SA5212M4-BIGDATA-671_8041
{code}

  was:
With HDFS Federation configured, the aggregation log have a default replication 
count of 1, rather than the value of dfs.replication in hdfs-site.xml 
configuration file.

before: 
{code:java}
[op@NM-304-SA5212M4-BIGDATA-640 ~]$ hdfs dfs -ls 
/yarn/apps/op/logs/application_1498544648312_0001
Found 3 items
-rw-r-----   1 op hadoop       8270 2017-06-27 14:25 
/yarn/apps/op/logs/application_1498544648312_0001/NM-304-SA5212M4-BIGDATA-645_8041
-rw-r-----   1 op hadoop      54469 2017-06-27 14:25 
/yarn/apps/op/logs/application_1498544648312_0001/NM-304-SA5212M4-BIGDATA-646_8041
-rw-r-----   1 op hadoop       6537 2017-06-27 14:25 
/yarn/apps/op/logs/application_1498544648312_0001/NM-304-SA5212M4-BIGDATA-672_8041
{code}





> Fix the bug of aggregation log have one replication in HDFS Federation 
> environment
> ----------------------------------------------------------------------------------
>
>                 Key: HADOOP-14604
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14604
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: common
>    Affects Versions: 2.6.0
>         Environment: Hadoop 2.6.0 with HDFS Federation
>            Reporter: dingguotao
>              Labels: patch
>         Attachments: HADOOP-14604.patch
>
>
> With HDFS Federation configured, the aggregation log have a default 
> replication count of 1, rather than the value of dfs.replication in 
> hdfs-site.xml configuration file.
> Before: 
> {code:java}
> [op@NM-304-SA5212M4-BIGDATA-640 ~]$ hdfs dfs -ls 
> /yarn/apps/op/logs/application_1498544648312_0001
> Found 3 items
> -rw-r-----   1 op hadoop       8270 2017-06-27 14:25 
> /yarn/apps/op/logs/application_1498544648312_0001/NM-304-SA5212M4-BIGDATA-645_8041
> -rw-r-----   1 op hadoop      54469 2017-06-27 14:25 
> /yarn/apps/op/logs/application_1498544648312_0001/NM-304-SA5212M4-BIGDATA-646_8041
> -rw-r-----   1 op hadoop       6537 2017-06-27 14:25 
> /yarn/apps/op/logs/application_1498544648312_0001/NM-304-SA5212M4-BIGDATA-672_8041
> {code}
> The aggregation log have only 1 replication in default. But  the value of 
> dfs.replication in hdfs-site.xml configuration file is 3
> After apply this patch:
> {code:java}
> [op@NM-304-SA5212M4-BIGDATA-640 ~]$ hdfs dfs -ls 
> /yarn/apps/op/logs/application_1498635214020_0001
> Found 3 items
> -rw-r-----   3 op hadoop       5729 2017-06-28 15:34 
> /yarn/apps/op/logs/application_1498635214020_0001/NM-304-SA5212M4-BIGDATA-645_8041
> -rw-r-----   3 op hadoop      38439 2017-06-28 15:34 
> /yarn/apps/op/logs/application_1498635214020_0001/NM-304-SA5212M4-BIGDATA-646_8041
> -rw-r-----   3 op hadoop       8270 2017-06-28 15:34 
> /yarn/apps/op/logs/application_1498635214020_0001/NM-304-SA5212M4-BIGDATA-671_8041
> {code}



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