Gian Merlino created CURATOR-394:
------------------------------------
Summary: UnrecognizedPropertyException: "enabled" incompatibility
Key: CURATOR-394
URL: https://issues.apache.org/jira/browse/CURATOR-394
Project: Apache Curator
Issue Type: Bug
Components: Recipes
Affects Versions: 2.12.0
Reporter: Gian Merlino
When doing a rolling upgrade of our services from Curator 2.10.0 to Curator
2.12.0 we noticed some of the non-upgraded services started throwing this
error. The cause seems to the combination of a new field added to
ServiceInstance in CURATOR-275, and the lack of an "ignore unknown properties"
setting on the ObjectMapper used by Curator 2.10.0.
If you have a cluster where every service is using service discovery to
announce itself and to find others, then I don't see a way to do a rolling
upgrade with the way things currently are. Whatever instance you upgrade first
will start announcing itself in a way that breaks instances running the
previous version of the code. This doesn't seem to be configurable either, so
the new "enabled" field can't be omitted from the serialized form.
One possible solution is to revert CURATOR-275, add an "ignore unknown
properties" to the ObjectMapper, and then re-introduce CURATOR-275 in a future
release. That'd create a "you must go through release X first to upgrade to
release Y" situation, but it would at least make it possible to do rolling
updates.
{code}
2017-03-23 16:22:35,652
[DruidTaskResolver[com.metamx.tranquility.druid.IndexService@37a0ec3c]] WARN
c.m.t.finagle.DruidTaskResolver - Poll failed, trying again
at[2017-03-23T16:23:10.899Z].
org.codehaus.jackson.map.exc.UnrecognizedPropertyException: Unrecognized field
"enabled" (Class org.apache.curator.x.discovery.ServiceInstance), not marked as
ignorable
at [Source: [B@e9cde06; line: 1, column: 226] (through reference chain:
org.apache.curator.x.discovery.ServiceInstance["enabled"])
at
org.codehaus.jackson.map.exc.UnrecognizedPropertyException.from(UnrecognizedPropertyException.java:53)
~[org.codehaus.jackson.jackson-mapper-asl-1.9.13.jar:1.9.13]
at
org.codehaus.jackson.map.deser.StdDeserializationContext.unknownFieldException(StdDeserializationContext.java:267)
~[org.codehaus.jackson.jackson-mapper-asl-1.9.13.jar:1.9.13]
at
org.codehaus.jackson.map.deser.std.StdDeserializer.reportUnknownProperty(StdDeserializer.java:673)
~[org.codehaus.jackson.jackson-mapper-asl-1.9.13.jar:1.9.13]
at
org.codehaus.jackson.map.deser.std.StdDeserializer.handleUnknownProperty(StdDeserializer.java:659)
~[org.codehaus.jackson.jackson-mapper-asl-1.9.13.jar:1.9.13]
at
org.codehaus.jackson.map.deser.BeanDeserializer.handleUnknownProperty(BeanDeserializer.java:1365)
~[org.codehaus.jackson.jackson-mapper-asl-1.9.13.jar:1.9.13]
at
org.codehaus.jackson.map.deser.BeanDeserializer._handleUnknown(BeanDeserializer.java:725)
~[org.codehaus.jackson.jackson-mapper-asl-1.9.13.jar:1.9.13]
at
org.codehaus.jackson.map.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:703)
~[org.codehaus.jackson.jackson-mapper-asl-1.9.13.jar:1.9.13]
at
org.codehaus.jackson.map.deser.BeanDeserializer.deserialize(BeanDeserializer.java:580)
~[org.codehaus.jackson.jackson-mapper-asl-1.9.13.jar:1.9.13]
at
org.codehaus.jackson.map.ObjectMapper._readMapAndClose(ObjectMapper.java:2732)
~[org.codehaus.jackson.jackson-mapper-asl-1.9.13.jar:1.9.13]
at
org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1973)
~[org.codehaus.jackson.jackson-mapper-asl-1.9.13.jar:1.9.13]
at
org.apache.curator.x.discovery.details.JsonInstanceSerializer.deserialize(JsonInstanceSerializer.java:50)
~[org.apache.curator.curator-x-discovery-2.10.0.jar:na]
at
org.apache.curator.x.discovery.details.ServiceCacheImpl.addInstance(ServiceCacheImpl.java:193)
~[org.apache.curator.curator-x-discovery-2.10.0.jar:na]
at
org.apache.curator.x.discovery.details.ServiceCacheImpl.start(ServiceCacheImpl.java:96)
~[org.apache.curator.curator-x-discovery-2.10.0.jar:na]
{code}
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
