Andrew Wang created HDFS-9788:
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Summary: Incompatible tag renumbering in HeartbeatResponseProto
Key: HDFS-9788
URL: https://issues.apache.org/jira/browse/HDFS-9788
Project: Hadoop HDFS
Issue Type: Bug
Components: rolling upgrades
Affects Versions: 2.8.0
Reporter: Andrew Wang
Assignee: Andrew Wang
Priority: Blocker
The HDFS-9426 patches for branch-2.7 and branch-2 used different tag numbers in
HeartbeatResponseProto:
trunk/branch-2:
{code}
message HeartbeatResponseProto {
repeated DatanodeCommandProto cmds = 1; // Returned commands can be null
required NNHAStatusHeartbeatProto haStatus = 2;
optional RollingUpgradeStatusProto rollingUpgradeStatus = 3;
optional uint64 fullBlockReportLeaseId = 4 [ default = 0 ];
optional RollingUpgradeStatusProto rollingUpgradeStatusV2 = 5;
}
{code}
branch-2.7:
{code}
message HeartbeatResponseProto {
repeated DatanodeCommandProto cmds = 1; // Returned commands can be null
required NNHAStatusHeartbeatProto haStatus = 2;
optional RollingUpgradeStatusProto rollingUpgradeStatus = 3;
optional RollingUpgradeStatusProto rollingUpgradeStatusV2 = 4;
}
{code}
This breaks rolling upgrade between 2.7 and a future 2.8. We need to renumber
the fields to preserve wire compatibility.
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