Hello,
It seems related to your another issue.
Consider to increase the amount of RAM globally for the container and increase the amout of RAM for Solr : in order to do it edit /opt/datafari/solr/bin/
solr.in.sh and change the line :
SOLR_JAVA_MEM="-Xms256m -Xmx1024m"
to SOLR_JAVA_MEM="-Xms4096m -Xmx4096m"
Of course you need to increase first the RAM allocated to the container before increase the RAM for Solr.
Best regards,
Olivier Tavard