[
https://issues.apache.org/jira/browse/HDFS-16038?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
lei w updated HDFS-16038:
-------------------------
Description:
When an Observer node is added to the cluster, the DataNode will not be able to
recognize the HAServiceState.observer, This is because we did not upgrade the
DataNode. Generally, it will take a long time for a big cluster to upgrade the
DataNode . So should we add a switch to replace the Observer state with the
Standby state when DataNode can not recognize the HAServiceState.observer state?
The following are some error messages of DataNode：
{code:java}
11:14:31,812 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: IOException
in offerService
com.google.protobuf.InvalidProtocolBufferException: Message missing required
fields: haStatus.state
at
com.google.protobuf.UninitializedMessageException.asInvalidProtocolBufferException(UninitializedMessageException.java:81)
at
com.google.protobuf.AbstractParser.checkMessageInitialized(AbstractParser.java:71)
{code}
was:
When an Observer node is added to the cluster, the DataNode will not be able to
recognize the HAServiceState.observer, This is because we did not upgrade the
DataNode. Generally, it will take a long time for a big cluster to upgrade the
DataNode . So should we add a switch to replace the Observer state with the
Standby state when DataNode can not recognize the HAServiceState.observer state?
The following are some error messages of DataNode：
{code:java}
//代码占位符
11:14:31,812 WARN org.apache.hadoop.hdfs.server.datanode.DataNode: IOException
in offerService
com.google.protobuf.InvalidProtocolBufferException: Message missing required
fields: haStatus.state
at
com.google.protobuf.UninitializedMessageException.asInvalidProtocolBufferException(UninitializedMessageException.java:81)
at
com.google.protobuf.AbstractParser.checkMessageInitialized(AbstractParser.java:71)
{code}
> DataNode Unrecognized Observer Node when cluster add an observer node
> ---------------------------------------------------------------------
>
> Key: HDFS-16038
> URL: https://issues.apache.org/jira/browse/HDFS-16038
> Project: Hadoop HDFS
> Issue Type: New Feature
> Reporter: lei w
> Priority: Critical
>
> When an Observer node is added to the cluster, the DataNode will not be able
> to recognize the HAServiceState.observer, This is because we did not upgrade
> the DataNode. Generally, it will take a long time for a big cluster to
> upgrade the DataNode . So should we add a switch to replace the Observer
> state with the Standby state when DataNode can not recognize the
> HAServiceState.observer state?
> The following are some error messages of DataNode：
> {code:java}
> 11:14:31,812 WARN org.apache.hadoop.hdfs.server.datanode.DataNode:
> IOException in offerService
> com.google.protobuf.InvalidProtocolBufferException: Message missing required
> fields: haStatus.state
> at
> com.google.protobuf.UninitializedMessageException.asInvalidProtocolBufferException(UninitializedMessageException.java:81)
> at
> com.google.protobuf.AbstractParser.checkMessageInitialized(AbstractParser.java:71)
> {code}
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