janhoy commented on a change in pull request #371:
URL: https://github.com/apache/solr/pull/371#discussion_r738208768
##########
File path:
solr/core/src/java/org/apache/solr/cloud/OverseerSolrResponseSerializer.java
##########
@@ -34,40 +33,22 @@
* <li>"Unknown" elements for the Javabin format will be serialized as
Strings. See {@link org.apache.solr.common.util.JavaBinCodec#writeVal}</li>
* </ul>
*/
- @SuppressWarnings("deprecation")
public static byte[] serialize(OverseerSolrResponse responseObject) {
Objects.requireNonNull(responseObject);
- if (useUnsafeSerialization()) {
- return SolrResponse.serializable(responseObject);
- }
try {
return Utils.toJavabin(responseObject.getResponse()).readAllBytes();
} catch (IOException|RuntimeException e) {
throw new SolrException(ErrorCode.SERVER_ERROR, "Exception serializing
response to Javabin", e);
}
}
- static boolean useUnsafeSerialization() {
- String useUnsafeOverseerResponse =
System.getProperty("solr.useUnsafeOverseerResponse");
- return useUnsafeOverseerResponse != null &&
("true".equals(useUnsafeOverseerResponse));
- }
-
- static boolean useUnsafeDeserialization() {
- String useUnsafeOverseerResponse =
System.getProperty("solr.useUnsafeOverseerResponse");
- return useUnsafeOverseerResponse != null &&
("true".equals(useUnsafeOverseerResponse) ||
"deserialization".equals(useUnsafeOverseerResponse));
- }
-
- @SuppressWarnings("deprecation")
public static OverseerSolrResponse deserialize(byte[] responseBytes) {
Objects.requireNonNull(responseBytes);
try {
@SuppressWarnings("unchecked")
NamedList<Object> response = (NamedList<Object>)
Utils.fromJavabin(responseBytes);
return new OverseerSolrResponse(response);
} catch (IOException|RuntimeException e) {
- if (useUnsafeDeserialization()) {
- return (OverseerSolrResponse) SolrResponse.deserialize(responseBytes);
Review comment:
You mean for people attempting an upgrade directly from <8.5 to 9.0? I
wonder if the RefGuide chapter "[Solr 9 Upgrade
Planning](https://github.com/apache/solr/blob/main/solr/solr-ref-guide/src/major-changes-in-solr-9.adoc#solr-9-upgrade-planning)"
needs to specify the minimum version from which an upgrade is supported.
Currently it talks about 8.1, but it should probably tell people to first
upgrade to 8.11, then to 9.0?
But if people don't listen to that advice, could we perhaps check for this
sysProp immediately on startup, e.g. in `SolrDispatchFilter#init()`, and refuse
to start at all?
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