[YARN-2944] InMemorySCMStore can not be instantiated with ReflectionUtils#newInstance

• Type: Sub-task
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.7.0
• Hadoop Flags: Reviewed
• Assignee: Chris Trezzo
• Reporter: Chris Trezzo
• Created: 10/Dec/14 00:56
• Updated: 24/Apr/15 23:17
• Resolved: 18/Dec/14 00:27

Description

Currently the Shared Cache Manager uses ReflectionUtils#newInstance to create the SCMStore service. Unfortunately the SCMStore class does not have a 0-argument constructor.

On startup, the SCM fails with the following:

14/12/09 16:10:53 INFO service.AbstractService: Service SharedCacheManager failed in state INITED; cause: java.lang.RuntimeException: java.lang.NoSuchMethodException: org.apache.hadoop.yarn.server.sharedcachemanager.store.InMemorySCMStore.<init>()
java.lang.RuntimeException: java.lang.NoSuchMethodException: org.apache.hadoop.yarn.server.sharedcachemanager.store.InMemorySCMStore.<init>()
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:131)
        at org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.createSCMStoreService(SharedCacheManager.java:103)
        at org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.serviceInit(SharedCacheManager.java:65)
        at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.main(SharedCacheManager.java:156)
Caused by: java.lang.NoSuchMethodException: org.apache.hadoop.yarn.server.sharedcachemanager.store.InMemorySCMStore.<init>()
        at java.lang.Class.getConstructor0(Class.java:2763)
        at java.lang.Class.getDeclaredConstructor(Class.java:2021)
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:125)
        ... 4 more
14/12/09 16:10:53 FATAL sharedcachemanager.SharedCacheManager: Error starting SharedCacheManager
java.lang.RuntimeException: java.lang.NoSuchMethodException: org.apache.hadoop.yarn.server.sharedcachemanager.store.InMemorySCMStore.<init>()
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:131)
        at org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.createSCMStoreService(SharedCacheManager.java:103)
        at org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.serviceInit(SharedCacheManager.java:65)
        at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
        at org.apache.hadoop.yarn.server.sharedcachemanager.SharedCacheManager.main(SharedCacheManager.java:156)
Caused by: java.lang.NoSuchMethodException: org.apache.hadoop.yarn.server.sharedcachemanager.store.InMemorySCMStore.<init>()
        at java.lang.Class.getConstructor0(Class.java:2763)
        at java.lang.Class.getDeclaredConstructor(Class.java:2021)
        at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:125)
        ... 4 more

This JIRA is to add a 0-argument constructor to SCMStore.