[
https://issues.apache.org/jira/browse/HDFS-16217?focusedWorklogId=650557&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-650557
]
ASF GitHub Bot logged work on HDFS-16217:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 14/Sep/21 13:02
Start Date: 14/Sep/21 13:02
Worklog Time Spent: 10m
Work Description: virajjasani opened a new pull request #3434:
URL: https://github.com/apache/hadoop/pull/3434
### Description of PR
When dfs.federation.router.federation.rename.option is set to DISTCP and
hdfs.fedbalance.procedure.scheduler.journal.uri is not set, DFSRouter fails to
launch.
```
2021-09-08 15:39:11,818 ERROR
org.apache.hadoop.hdfs.server.federation.router.DFSRouter: Failed to start
router
java.lang.NullPointerException
at java.base/java.net.URI$Parser.parse(URI.java:3104)
at java.base/java.net.URI.<init>(URI.java:600)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.initRouterFedRename(RouterRpcServer.java:444)
at
org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.<init>(RouterRpcServer.java:419)
at
org.apache.hadoop.hdfs.server.federation.router.Router.createRpcServer(Router.java:391)
at
org.apache.hadoop.hdfs.server.federation.router.Router.serviceInit(Router.java:188)
at
org.apache.hadoop.service.AbstractService.init(AbstractService.java:164)
at
org.apache.hadoop.hdfs.server.federation.router.DFSRouter.main(DFSRouter.java:69)
```
hdfs.fedbalance.procedure.scheduler.journal.uri is
hdfs://localhost:8020/tmp/procedure by default, however, the default value is
not used in DFSRouter.
### How was this patch tested?
Local dev testing. After applying fix for HDFS-16219, we can reproduce above
error. And the fix provides default value to
hdfs.fedbalance.procedure.scheduler.journal.uri.
### For code changes:
- [X] Does the title or this PR starts with the corresponding JIRA issue id
(e.g. 'HADOOP-17799. Your PR title ...')?
- [ ] Object storage: have the integration tests been executed and the
endpoint declared according to the connector-specific documentation?
- [ ] If adding new dependencies to the code, are these dependencies
licensed in a way that is compatible for inclusion under [ASF
2.0](http://www.apache.org/legal/resolved.html#category-a)?
- [ ] If applicable, have you updated the `LICENSE`, `LICENSE-binary`,
`NOTICE-binary` files?
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Issue Time Tracking
-------------------
Worklog Id: (was: 650557)
Remaining Estimate: 0h
Time Spent: 10m
> RBF: Set default value of hdfs.fedbalance.procedure.scheduler.journal.uri
> -------------------------------------------------------------------------
>
> Key: HDFS-16217
> URL: https://issues.apache.org/jira/browse/HDFS-16217
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: rbf
> Environment: Hadoop 3.3.0 with patches
> Reporter: Akira Ajisaka
> Assignee: Viraj Jasani
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When dfs.federation.router.federation.rename.option is set to DISTCP and
> hdfs.fedbalance.procedure.scheduler.journal.uri is not set, DFSRouter fails
> to launch.
> {quote}
> 2021-09-08 15:39:11,818 ERROR
> org.apache.hadoop.hdfs.server.federation.router.DFSRouter: Failed to start
> router
> java.lang.NullPointerException
> at java.base/java.net.URI$Parser.parse(URI.java:3104)
> at java.base/java.net.URI.<init>(URI.java:600)
> at
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.initRouterFedRename(RouterRpcServer.java:444)
> at
> org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer.<init>(RouterRpcServer.java:419)
> at
> org.apache.hadoop.hdfs.server.federation.router.Router.createRpcServer(Router.java:391)
> at
> org.apache.hadoop.hdfs.server.federation.router.Router.serviceInit(Router.java:188)
> at
> org.apache.hadoop.service.AbstractService.init(AbstractService.java:164)
> at
> org.apache.hadoop.hdfs.server.federation.router.DFSRouter.main(DFSRouter.java:69)
> {quote}
> hdfs.fedbalance.procedure.scheduler.journal.uri is
> hdfs://localhost:8020/tmp/procedure by default, however, the default value is
> not used in DFSRouter.
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