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Solr 5.5 Solr Exception Error opening new searcher (NiFi Flow)

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Explorer

Hi - Solr 5.5 was working fine with NiFi, until I restarted my VM. Now when I start Nifi and Solr, I get the following message in Solr:

tweets_shard1_replica1: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error opening new searcher

I'm attaching the complete solr log. Please can someone help?

Thank Youtweets-shard1-replica1.txt

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23 REPLIES 23

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Super Collaborator

@Raf Mohammed - Assuming your index is stored in HDFS rather than the local file system where Solr is running:

hdfs dfs -mkdir /solr/DELETEME_core_node1 
hdfs dfs -mv /solr/tweets/core_node1/data/tlog/tlog.* /solr/DELETEME_core_node1

When you're ready to delete the files, run this command:

hdfs dfs -rm -r /solr/DELETEME_core_node1

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Explorer

@james.jones I managed to run those commands without any issues, however when restarting Solr, I'm still getting the same error 😞

29/11/2016, 22:16:42WARNnullNativeCodeLoaderUnable to load native-hadoop library for your platform... using builtin-java classes where applicable
29/11/2016, 22:16:44WARNnullBlockReaderFactoryI/O error constructing remote block reader.
29/11/2016, 22:16:44WARNnullDFSClientConnection failure: Failed to connect to /172.17.0.2:50010 for file /solr/tweets/core_node1/data/index/segments_9g for block BP-1464254149-172.17.0.2-1477381671113:blk_1073759485_18671:java.io.IOException: Got error for OP_READ_BLOCK, self=/172.17.0.2:33680, remote=/172.17.0.2:50010, for file /solr/tweets/core_node1/data/index/segments_9g, for pool BP-1464254149-172.17.0.2-1477381671113 block 1073759485_18671
29/11/2016, 22:16:44WARNnullDFSClientDFS chooseDataNode: got # 1 IOException, will wait for 673.6703523877359 msec.
29/11/2016, 22:16:45WARNnullBlockReaderFactoryI/O error constructing remote block reader.
29/11/2016, 22:16:45WARNnullDFSClientConnection failure: Failed to connect to /172.17.0.2:50010 for file /solr/tweets/core_node1/data/index/segments_9g for block BP-1464254149-172.17.0.2-1477381671113:blk_1073759485_18671:java.io.IOException: Got error for OP_READ_BLOCK, self=/172.17.0.2:33684, remote=/172.17.0.2:50010, for file /solr/tweets/core_node1/data/index/segments_9g, for pool BP-1464254149-172.17.0.2-1477381671113 block 1073759485_18671
29/11/2016, 22:16:45WARNnullDFSClientDFS chooseDataNode: got # 2 IOException, will wait for 6501.220629185886 msec.
29/11/2016, 22:16:52WARNnullBlockReaderFactoryI/O error constructing remote block reader.
29/11/2016, 22:16:52WARNnullDFSClientConnection failure: Failed to connect to /172.17.0.2:50010 for file /solr/tweets/core_node1/data/index/segments_9g for block BP-1464254149-172.17.0.2-1477381671113:blk_1073759485_18671:java.io.IOException: Got error for OP_READ_BLOCK, self=/172.17.0.2:33706, remote=/172.17.0.2:50010, for file /solr/tweets/core_node1/data/index/segments_9g, for pool BP-1464254149-172.17.0.2-1477381671113 block 1073759485_18671
29/11/2016, 22:16:52WARNnullDFSClientDFS chooseDataNode: got # 3 IOException, will wait for 6947.415060544425 msec.
29/11/2016, 22:16:59WARNnullBlockReaderFactoryI/O error constructing remote block reader.
29/11/2016, 22:16:59WARNnullDFSClientConnection failure: Failed to connect to /172.17.0.2:50010 for file /solr/tweets/core_node1/data/index/segments_9g for block BP-1464254149-172.17.0.2-1477381671113:blk_1073759485_18671:java.io.IOException: Got error for OP_READ_BLOCK, self=/172.17.0.2:33726, remote=/172.17.0.2:50010, for file /solr/tweets/core_node1/data/index/segments_9g, for pool BP-1464254149-172.17.0.2-1477381671113 block 1073759485_18671
29/11/2016, 22:16:59WARNnullDFSClientCould not obtain block: BP-1464254149-172.17.0.2-1477381671113:blk_1073759485_18671 file=/solr/tweets/core_node1/data/index/segments_9g No live nodes contain current block Block locations: 172.17.0.2:50010 Dead nodes: 172.17.0.2:50010. Throwing a BlockMissingException
29/11/2016, 22:17:00ERRORnullCoreContainerError creating core [tweets_shard1_replica1]: Error opening new searcher
29/11/2016, 22:17:00ERRORnullCoreContainer

Error waiting for SolrCore to be created

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Super Collaborator

@Raf Mohammed - Also, if you really don't care about the data you can also delete the collection and then recreate it again:

#http://localhost:8983/admin/collections?action=DELETE&name=tweets

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Explorer

@james.jones Thanks, I ran that command, but didn't get a confirmation message to say it's deleted, when i re-enter the command it doesn't tell me that it no longer exists. am i missing something?

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Explorer

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Super Collaborator

@Raf Mohammed - it looks like something is bad wrong with your HDFS.

So about deleting the collection, I don't recall, but you should be able to look in Solr at the collections and it should be gone. Also if you try to recreate the collection it should tell you that it already exists if it was not deleted. I don't recall if the data will be deleted when the collection is deleted but I think it is.

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Explorer

@james.jones - Not sure what else to try, maybe i'm not deleting it from the correct path?

[solr@sandbox root]$ /opt/lucidworks-hdpsearch/solr/bin/solr create -c tweets -d tweet_configs -s 1 -rf 1 -p 8983

Connecting to ZooKeeper at sandbox.hortonworks.com:2181/solr ...

Re-using existing configuration directory tweets

ERROR:

Collection 'tweets' already exists!

Checked collection existence using Collections API command:

http://sandbox.hortonworks.com:8983/solr/admin/collections?action=list

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Explorer

screen-shot-2016-11-29-at-224034.png Here's what my Solr UI looks like right now. There must be away to force Solr to overlook this...

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@james.jones I got up to step for, but can't proceed due to: [root@sandbox ~]# -bash: http://localhost:8984/solr/admin/collections?action=DELETE: No such file or directory

Would I be ok to recreate the collection?