How My Server Recovered from OutOfMemoryError: Java heap space

YaCy
1

In case this could help someone…

When Yacy would not boot, because of the error:
java.lang.OutOfMemoryError: Java heap space

This got it running again, on a server with RAM: 5.8 GiB. If your server has less RAM, you might not want to try this, but most machines probably have more than this amount of RAM now, right?

export JAVA_TOOL_OPTIONS="-Xms1g -Xmx3g"
java -Xms1g -Xmx3g -classpath "lib/*:." net.yacy.yacy

After awhile of running, seeing that Yacy was working, I pressed CNTRL+C and restarted it with:

export JAVA_TOOL_OPTIONS="-Xms1g -Xmx3g"
./startYACY.sh
2

That is fascinating! Thank you for sharing that. I wonder what is causing that memory situation in the first place? I don’t suppose you have a text file of the verbose error output from it failing do you? If you do, I would look into it and see if I can figure out what is going on, if you are interested. :slight_smile:

3

The server is no longer crashing. As @roamn has shown in his reporting, the peak of the query attack appears behind us now. That strain on the servers certainly contributed to the out of memory errors.

4

This should also now be covered with RWIs fill out the whole memory space for YaCy · Issue #731 · yacy/yacy_search_server · GitHub