I verified thread dump several times, there are a lot of messages like
waiting for monitor entry ...
at org.apache.lucene.index.SegmentReader.norms(SegmentReader.java:790)
It corresponds to method call:
// returns fake norms if norms aren't available
public synchronized byte[] norms(String field) throws IOException {
ensureOpen();
byte[] bytes = getNorms(field);
if (bytes==null) bytes=fakeNorms();
return bytes;
}
It didn't happen before (when I used CRON-Replication each night, and caches
were rewarmed daily); it happens now almost each day (after significant
loads generated by search engines).
I'll send Thread Dump later, do not have access to logs right now...
Thanks
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