Will Currie created SOLR-12321:
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Summary: Use of builtin java serialization for admin response
breaks 7.3 compatibility
Key: SOLR-12321
URL: https://issues.apache.org/jira/browse/SOLR-12321
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Affects Versions: 7.3, 7.3.1
Reporter: Will Currie
Premise: During an upgrade I should be able to run a 7.3 pull replica against a
7.2 tlog leader. Or vice versa.
Adding a new method[1] to SolrResponse has broken binary compatibility. When I
try to register a new pull replica using the admin api[2] I get an HTTP 500
responseI see this error logged: java.io.InvalidClassException:
org.apache.solr.client.solrj.SolrResponse; local class incompatible: stream
classdesc serialVersionUID = 3945300637328478755, local class serialVersionUID
= -793110010336024264
The replica actually seems to register ok it just can't read the response
because the bytes from the 7.2 leader include a different serialVersionUID.
Should SolrResponse include a serialVersionIUID? All subclasses too.
[[email protected]]'s advice is that the project should never use builtin
java serialization.
It looks like stock java serialization is only used for these admin responses.
Query responses use JavaBinCodec instead..
Full(ish) stack trace:
{noformat}
ERROR HttpSolrCall null:org.apache.solr.common.SolrException:
java.io.InvalidClassException: org.apache.solr.client.solrj.SolrResponse; local
class incompatible: st
ream classdesc serialVersionUID = 3945300637328478755, local class
serialVersionUID = -7931100103360242645
at
org.apache.solr.client.solrj.SolrResponse.deserialize(SolrResponse.java:73)
at
org.apache.solr.handler.admin.CollectionsHandler.sendToOCPQueue(CollectionsHandler.java:348)
at
org.apache.solr.handler.admin.CollectionsHandler.invokeAction(CollectionsHandler.java:256)
at
org.apache.solr.handler.admin.CollectionsHandler.handleRequestBody(CollectionsHandler.java:230)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:195)
at org.apache.solr.servlet.HttpSolrCall.handleAdmin(HttpSolrCall.java:736)
at
org.apache.solr.servlet.HttpSolrCall.handleAdminRequest(HttpSolrCall.java:717)
at org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:498)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:384)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:330)
{noformat}
[1]
[https://github.com/apache/lucene-solr/commit/5ce83237e804ac1130eaf5cf793955667793fee0#diff-b809fa594f93aa6805381029a188e4e2R46]
[2]
[http://localhost:8983/solr/admin/collections?action=ADDREPLICA&collection=blah&shard=shard1&node=blah&type=pull]
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