我第一次尝试在RHEL 8上使用Openjdk版本"17.0.2"。我正在遵循教程https://solr.apache.org/guide/8_11/solr-tutorial.html。我得到警告:
WARN - 2022-04-20 12:07:20.762; org.apache.zookeeper.ClientCnxn; An exception was thrown while closing send thread for session 0x10003e1057e0003. => EndOfStreamException: Unable to read additional data from server sessionid 0x10003e1057e0003, likely server has closed socket
at org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:77)
org.apache.zookeeper.ClientCnxn$EndOfStreamException: Unable to read additional data from server sessionid 0x10003e1057e0003, likely server has closed socket
at org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:77) ~[zookeeper-3.6.2.jar:3.6.2]
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350) ~[zookeeper-3.6.2.jar:3.6.2]
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1275) ~[zookeeper-3.6.2.jar:3.6.2]
这应该是一个直截了当的教程。你知道我错过了什么吗?
这是教程的开始:
[solr@abc294837 ~]$ ./bin/solr start -e cloud
Welcome to the SolrCloud example!
This interactive session will help you launch a SolrCloud cluster on your local workstation.
To begin, how many Solr nodes would you like to run in your local cluster? (specify 1-4 nodes) [2]:
Ok, let's start up 2 Solr nodes for your example SolrCloud cluster.
Please enter the port for node1 [8983]:
Please enter the port for node2 [7574]:
Solr home directory /opt/solr/example/cloud/node1/solr already exists.
/opt/solr/example/cloud/node2 already exists.
Starting up Solr on port 8983 using command:
"/opt/solr/bin/solr" start -cloud -p 8983 -s "/opt/solr/example/cloud/node1/solr"
Waiting up to 180 seconds to see Solr running on port 8983 []
Started Solr server on port 8983 (pid=50226). Happy searching!
Starting up Solr on port 7574 using command:
"/opt/solr/bin/solr" start -cloud -p 7574 -s "/opt/solr/example/cloud/node2/solr" -z localhost:2181
Waiting up to 180 seconds to see Solr running on port 7574 [-]
Started Solr server on port 7574 (pid=50417). Happy searching!
INFO - 2022-04-20 12:07:20.502; org.apache.solr.common.cloud.ConnectionManager; Waiting for client to connect to ZooKeeper
INFO - 2022-04-20 12:07:20.553; org.apache.solr.common.cloud.ConnectionManager; zkClient has connected
INFO - 2022-04-20 12:07:20.556; org.apache.solr.common.cloud.ConnectionManager; Client is connected to ZooKeeper
INFO - 2022-04-20 12:07:20.631; org.apache.solr.common.cloud.ZkStateReader; Updated live nodes from ZooKeeper... (0) -> (2)
INFO - 2022-04-20 12:07:20.737; org.apache.solr.client.solrj.impl.ZkClientClusterStateProvider; Cluster at localhost:2181 ready
WARN - 2022-04-20 12:07:20.762; org.apache.zookeeper.ClientCnxn; An exception was thrown while closing send thread for session 0x10003e1057e0003. => EndOfStreamException: Unable to read additional data from server sessionid 0x10003e1057e0003, likely server has closed socket
at org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:77)
org.apache.zookeeper.ClientCnxn$EndOfStreamException: Unable to read additional data from server sessionid 0x10003e1057e0003, likely server has closed socket
at org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:77) ~[zookeeper-3.6.2.jar:3.6.2]
at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350) ~[zookeeper-3.6.2.jar:3.6.2]
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1275) ~[zookeeper-3.6.2.jar:3.6.2]
Now let's create a new collection for indexing documents in your 2-node cluster.
Please provide a name for your new collection: [gettingstarted]
´´´
你没有错过任何东西，这是Zookeeper错误地警告套接字连接正在关闭。
[EDIT]:这个问题已经在Solr版本8.11.2和9.0.0 (Zookeeper版本3.6.4,3.7.1,3.8.1,3.9.0)中修复。
我们可以在这个提交中看到异常被捕获和预期(注释说closing so this is expected)，但现在它被报告为警告并记录了堆栈跟踪，尽管这本身不是错误。因此，您可以将此消息视为调试消息(就像提交之前一样)。
参考这个问题，由这个问题引起的，以及这个拉请求修复。
我们仍然可以在Solr/log4j配置中使Zookeeper安静，通过将其记录器的级别从"warn";error":
solr/solr/服务器/资源/log4j2-console.xml
<AsyncLogger name="org.apache.zookeeper" level="ERROR"/>