Ming Ma created HADOOP-11305:
--------------------------------
Summary: RM might not start if the machine was hard shutdown and
FileSystemRMStateStore was used
Key: HADOOP-11305
URL: https://issues.apache.org/jira/browse/HADOOP-11305
Project: Hadoop Common
Issue Type: Bug
Reporter: Ming Ma
This might be a known issue. Given FileSystemRMStateStore isn't used for HA
scenario, it might not be that important, unless there is something we need to
fix at RM layer to make it more tolerant to RMStore issue.
When RM was hard shutdown, OS might not get a chance to persist blocks. Some of
the stored application data end up with size zero after reboot. And RM didn't
like that.
{noformat}
ls -al
/var/log/hadoop/rmstore/FSRMStateRoot/RMAppRoot/application_1412702189634_324351
total 156
drwxr-xr-x. 2 x y 4096 Nov 13 16:45 .
drwxr-xr-x. 1524 x y 151552 Nov 13 16:45 ..
-rw-r--r--. 1 x y 0 Nov 13 16:45 appattempt_1412702189634_324351_000001
-rw-r--r--. 1 x y 0 Nov 13 16:45
.appattempt_1412702189634_324351_000001.crc
-rw-r--r--. 1 x y 0 Nov 13 16:45 application_1412702189634_324351
-rw-r--r--. 1 x y 0 Nov 13 16:45 .application_1412702189634_324351.crc
{noformat}
When RM starts up
{noformat}
2014-11-13 16:55:25,844 WARN org.apache.hadoop.fs.FSInputChecker: Problem
opening checksum file:
file:/var/log/hadoop/rmstore/FSRMStateRoot/RMAppRoot/application_1412702189634_324351/application_1412702189634_324351.
Ignoring exception:
java.io.EOFException
at java.io.DataInputStream.readFully(DataInputStream.java:197)
at java.io.DataInputStream.readFully(DataInputStream.java:169)
at
org.apache.hadoop.fs.ChecksumFileSystem$ChecksumFSInputChecker.<init>(ChecksumFileSystem.java:146)
at
org.apache.hadoop.fs.ChecksumFileSystem.open(ChecksumFileSystem.java:339)
at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:792)
at
org.apache.hadoop.yarn.server.resourcemanager.recovery.FileSystemRMStateStore.readFile(FileSystemRMStateStore.java:501)
...
2014-11-13 17:40:48,876 ERROR
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager: Failed to
load/recover state
java.lang.NullPointerException
at
org.apache.hadoop.yarn.server.resourcemanager.recovery.RMStateStore$ApplicationState.getAppId(RMStateStore.java:184)
at
org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.recoverApplication(RMAppManager.java:306)
at
org.apache.hadoop.yarn.server.resourcemanager.RMAppManager.recover(RMAppManager.java:425)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.recover(ResourceManager.java:1027)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$RMActiveServices.serviceStart(ResourceManager.java:484)
at
org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at
org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.startActiveServices(ResourceManager.java:834)
{noformat}
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