Need help migrating from java 8

[cojalvo]

Hi, im migrating my AppEngine cloud endpoints server from Java 8 and now I'm getting a lot of errors from the Memcache service. which I'm not sure how to handle them. any help will be appreciated. my server is using the Memcache everywhere so I cant remove it. any help will be appreciated.

for example: 

Service error in memcache com.google.appengine.api.memcache.MemcacheServiceException: Memcache put: exception setting 1 key (mitracks_5942694486999040) to '[]' at com.google.appengine.api.memcache.MemcacheServiceApiHelper$RpcResponseHandler.handleApiProxyException(MemcacheServiceApiHelper.java:71) at com.google.appengine.api.memcache.AsyncMemcacheServiceImpl$RpcResponseHandlerForPut.handleApiProxyException(AsyncMemcacheServiceImpl.java:349) at com.google.appengine.api.memcache.MemcacheServiceApiHelper$1.absorbParentException(MemcacheServiceApiHelper.java:111) at 

[robertcarlos]

Hi @cojalvo,

Welcome to Google Cloud Community!

Please check this documentation on differences between Java 8 and Java 11+ as you may have missed some steps when migrating from Java 8 to Java 11 or later.

Please take note of the following when performing the migration process:

• Please check the differences when migrating from Java 8 with or without bundled services, whether you choose to use legacy bundled services.
• Please check for key differences between the Java 8 and Java 11+ runtimes.
• 2nd gen Java runtimes don't include any web-serving framework unless you're using legacy bundled services. You can use any framework other than a servlet-based framework. If you're using legacy bundled services, 2nd gen Java runtimes will provide the Jetty web-serving framework.
• gcloud CLI does not support the following file formats:
  • cron.xml
  • datastore-index.xml
  • dispatch.xml
  • queue.xml
• You need to follow this link to manually migrate your xml files to yaml files.

Please check this documentation on migrating off of legacy bundled services for additional information if you don't want to use legacy bundled services for your project.

Hope this helps.