DSE 2 solr節點，在1不可用時都會關閉

Question

我目前正在將現有的SOLR雲實施遷移到Datastax Enterprise（3.2.1）Solr實施。

我有8個DSE節點，6個cassandra節點和2個solr節點。當任Solr的節點出現故障，另外一個還沒有這樣做的查詢，以下情況例外：

ERROR [http-8983-98] 2013-11-22 20:03:32,447 SolrDispatchFilter.java (line 641) Error request exception: java.io.IOException: Unavailable shards for ranges: [(-6148914691236517206,-3074457345618258604], (-3074457345618258604,-2], (-9223372036854775807,-6148914691236517206], (-2,0]] 
java.lang.RuntimeException: java.io.IOException: Unavailable shards for ranges: [(-6148914691236517206,-3074457345618258604], (-3074457345618258604,-2], (-9223372036854775807,-6148914691236517206], (-2,0]] 
    at org.apache.solr.handler.component.CassandraHttpShardHandler.checkDistributed(CassandraHttpShardHandler.java:40) 
    at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:178) 
    at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135) 
    at org.apache.solr.core.SolrCore.execute(SolrCore.java:1839) 
    at org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:667) 
    at com.datastax.bdp.cassandra.index.solr.CassandraDispatchFilter.execute(CassandraDispatchFilter.java:176) 
    at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:359) 
    at org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:155) 
    at com.datastax.bdp.cassandra.index.solr.CassandraDispatchFilter.doFilter(CassandraDispatchFilter.java:139) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at com.datastax.bdp.cassandra.audit.SolrHttpAuditLogFilter.doFilter(SolrHttpAuditLogFilter.java:194) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at com.datastax.bdp.cassandra.index.solr.auth.CassandraAuthorizationFilter.doFilter(CassandraAuthorizationFilter.java:95) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at com.datastax.bdp.cassandra.index.solr.auth.DseAuthenticationFilter.doFilter(DseAuthenticationFilter.java:102) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) 
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859) 
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588) 
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) 
    at java.lang.Thread.run(Thread.java:722) 
Caused by: java.io.IOException: Unavailable shards for ranges: [(-6148914691236517206,-3074457345618258604], (-3074457345618258604,-2], (-9223372036854775807,-6148914691236517206], (-2,0]] 
    at com.datastax.bdp.cassandra.index.solr.dht.OptimizedShardSelectionStrategy.select(OptimizedShardSelectionStrategy.java:59) 
    at com.datastax.bdp.cassandra.index.solr.dht.ShardRouter.endpointsToContact(ShardRouter.java:579) 
    at com.datastax.bdp.cassandra.index.solr.dht.ShardRouter.route(ShardRouter.java:184) 
    at org.apache.solr.handler.component.CassandraHttpShardHandler.checkDistributed(CassandraHttpShardHandler.java:36) 
    ... 29 more 

我想不通爲什麼出現這種情況，應該是容錯嗎？

任何人有一些想法如何解決這個問題？

Answer 1

你有複製因子之一。如果是這樣，錯誤是說該節點不能被查詢，因此不能返回完整的結果。