We had solr server 4.7 recently reported such WARN message, and come with a long GC pause after that. Sometime it will force Solr server disconnect with ZK server.
Solr 4.7.0, got this warning message: WARN - 2015-10-19 02:23:24.503; org.apache.solr.search.grouping.CommandHandler; Query: +(+owner:testUser) +(+directoryUUID:xxxxxxxxxxxxxxxxx +softFlag:`^H^@^@^@^@); Elapsed time: 20Exceeded allowed search time: 1 ms. Questions is The log string has sometring like this: `^H^@^@^@^@), this looks like a truncated string. Is this expected output? Or indicating something wrong in this query?
