dih - Solr Throwing Error while full import( with clean option = false) -

my problem when full-importing solr( via dih ), when solr starts fetch documents mysql, if query on particular time getting server error below

note: while running fullimport ( clean option set false)

http status 500 - input string: "solr" java.lang.numberformatexception: input string: "solr" @ java.lang.numberformatexception.forinputstring(numberformatexception.java:65) @ java.lang.long.parselong(long.java:441) @ java.lang.long.parselong(long.java:483) @  org.apache.solr.schema.triefield.readabletoindexed(triefield.java:295) @ org.apache.solr.schema.triefield.tointernal(triefield.java:307) @ org.apache.solr.schema.fieldtype.getfieldquery(fieldtype.java:580) @ org.apache.solr.search.solrqueryparser.getfieldquery(solrqueryparser.java:201) @ org.apache.lucene.queryparser.queryparser.term(queryparser.java:1436) @ org.apache.lucene.queryparser.queryparser.clause(queryparser.java:1319) @ org.apache.lucene.queryparser.queryparser.query(queryparser.java:1245) @ org.apache.lucene.queryparser.queryparser.toplevelquery(queryparser.java:1234) @ org.apache.lucene.queryparser.queryparser.parse(queryparser.java:206) @  

please if knows why happening , how can avoid ?

ps : master & slave replication can avoid this, indeed need without replication.