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https://issues.apache.org/jira/browse/SOLR-10704?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daisy.Yuan updated SOLR-10704:
------------------------------
    Summary: REPLACENODE can make the collection with one replica lost data  
(was: REPLACENODE can make the collection lost data)

> REPLACENODE can make the collection with one replica lost data
> --------------------------------------------------------------
>
>                 Key: SOLR-10704
>                 URL: https://issues.apache.org/jira/browse/SOLR-10704
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: SolrCloud
>    Affects Versions: 6.2
>         Environment: Red Hat 4.8.3-9, JDK 1.8.0_121
>            Reporter: Daisy.Yuan
>
> 1. Collections' replicas distribution: 
> replace-hdfs-coll1 has two shards, each shard has one replica and the index 
> files was stored on hdfs. 
> replace-hdfs-coll1_shard1_replica1  on node 192.168.229.219
> replace-hdfs-coll1_shard2_replica1  on node 192.168.228.193
> replace-hdfs-coll2 has two shards, each shard has two replica and the index 
> files was stored on hdfs.
> replace-hdfs-coll2_shard1_replica1  on node 192.168.229.219
> replace-hdfs-coll2_shard1_replica2  on node 192.168.229.193
> replace-hdfs-coll2_shard2_replica1  on node 192.168.228.193
> replace-hdfs-coll2_shard2_replica2  on node 192.168.229.219
> replace-local-coll1 has two shards, each shard has one replica and the index 
> files was stored on disk.
> replace-local-coll1_shard1_replica1  on node 192.168.228.193
> replace-local-coll1_shard2_replica1  on node 192.168.229.219
> replace-local-coll2 has two shards, each shard has two replica and the index 
> files was stored on disk.
> replace-local-coll2_shard1_replica1  on node 192.168.229.193
> replace-local-coll2_shard1_replica2 on node 192.168.229.219
> replace-local-coll2_shard2_replica1  on node 192.168.228.193
> replace-local-coll2_shard2_replica2  on node 192.168.229.219
> 2. Execute REPLACENODE to replace node 192.168.229.219 with node 
> 192.168.229.137
> 3. The REPLACENODE request was executed successfully
> 4. The target replace-hdfs-coll1_shard1_replica2 does not complete 
> revovering, but the source replace-hdfs-coll1_shard1_replica1 was already be 
> deleted. At last the target revocery failed for the following exception:
> 2017-05-18 17:08:48,587 | ERROR | 
> recoveryExecutor-3-thread-2-processing-n:192.168.229.137:21103_solr 
> x:replace-hdfs-coll1_shard1_replica2 s:shard1 c:replace-hdfs-coll1 
> r:core_node3 | Error while trying to recover. 
> core=replace-hdfs-coll1_shard1_replica2:java.lang.NullPointerException
>         at org.apache.solr.update.PeerSync.alreadyInSync(PeerSync.java:339)
> 5. The main process log messages
> log in 193.log, the node 192.168.228.193 is overseer role.
> step 1. node 192.168.229.193 recevied the REPLACENODE request
> 2017-05-18 17:08:32,717 | INFO  | http-nio-21100-exec-6 | Invoked Collection 
> Action :replacenode with params 
> action=REPLACENODE&source=192.168.229.219:21100_solr&wt=json&target=192.168.229.137:21103_solr
>  and sendToOCPQueue=true | 
> org.apache.solr.handler.admin.CollectionsHandler.handleRequestBody(CollectionsHandler.java:203)
> step 2. OverseerCollectionConfigSetProcessor get the task msg and process 
> REPLACENODE
> step 3.  add replica
> 2017-05-18 17:08:36,592 | INFO  | 
> OverseerStateUpdate-1225069473835599708-192.168.228.193:21100_solr-n_0000000063
>  | processMessage: queueSize: 1, message = {
>   "core":"replace-hdfs-coll1_shard1_replica2",
>   "roles":null,
>   "base_url":"http://192.168.229.137:21103/solr";,
>   "node_name":"192.168.229.137:21103_solr",
>   "state":"down",
>   "shard":"shard1",
>   "collection":"replace-hdfs-coll1",
>   "operation":"state"} current state version: 42 | 
> org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:221)
>   
>  2017-05-18 17:08:40,540 | INFO  | 
> OverseerStateUpdate-1225069473835599708-192.168.228.193:21100_solr-n_0000000063
>  | processMessage: queueSize: 1, message = {
>   "core":"replace-hdfs-coll1_shard1_replica2",
>   "core_node_name":"core_node3",
>   
> "dataDir":"hdfs://hacluster//user/solr//SolrServer1/replace-hdfs-coll1/core_node3/data/",
>   "roles":null,
>   "base_url":"http://192.168.229.137:21103/solr";,
>   "node_name":"192.168.229.137:21103_solr",
>   "state":"recovering",
>   "shard":"shard1",
>   "collection":"replace-hdfs-coll1",
>   "operation":"state",
>   
> "ulogDir":"hdfs://hacluster/user/solr/SolrServer1/replace-hdfs-coll1/core_node3/data/tlog"}
>  current state version: 42 | 
> org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:221)
>  step 4.  deletecore
> 2017-05-18 17:08:47,552 | INFO  | 
> OverseerStateUpdate-1225069473835599708-192.168.228.193:21100_solr-n_0000000063
>  | processMessage: queueSize: 1, message = {
>   "operation":"deletecore",
>   "core":"replace-hdfs-coll1_shard1_replica1",
>   "node_name":"192.168.229.219:21100_solr",
>   "collection":"replace-hdfs-coll1",
>   "core_node_name":"core_node2"} current state version: 42 | 
> org.apache.solr.cloud.Overseer$ClusterStateUpdater.run(Overseer.java:221)
>   
>  192.168.229.219 is the source node.
>   2017-05-18 17:08:47,484 | INFO  | http-nio-21100-exec-6 | Removing 
> directory before core close: 
> hdfs://hacluster//user/solr//SolrServerAdmin/replace-hdfs-coll1/core_node2/data/index
>  | 
> org.apache.solr.core.CachingDirectoryFactory.closeCacheValue(CachingDirectoryFactory.java:271)
> 2017-05-18 17:08:47,515 | INFO  | http-nio-21100-exec-6 | Removing directory 
> after core close: 
> hdfs://hacluster//user/solr//SolrServerAdmin/replace-hdfs-coll1/core_node2/data
>  | 
> org.apache.solr.core.CachingDirectoryFactory.close(CachingDirectoryFactory.java:204)
>  192.168.229.137 is the target node, but  replace-hdfs-coll1_shard1_replica2 
> recovering is not finished
>  2017-05-18 17:08:48,547 | INFO  | 
> recoveryExecutor-3-thread-2-processing-n:192.168.229.137:21103_solr 
> x:replace-hdfs-coll1_shard1_replica2 s:shard1 c:replace-hdfs-coll1 
> r:core_node3 | Attempting to PeerSync from 
> [http://192.168.229.219:21100/solr/replace-hdfs-coll1_shard1_replica1/] - 
> recoveringAfterStartup=[true] | 
> org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:370)
> 2017-05-18 17:08:48,547 | INFO  | 
> recoveryExecutor-3-thread-2-processing-n:192.168.229.137:21103_solr 
> x:replace-hdfs-coll1_shard1_replica2 s:shard1 c:replace-hdfs-coll1 
> r:core_node3 | PeerSync: core=replace-hdfs-coll1_shard1_replica2 
> url=http://192.168.229.137:21103/solr START 
> replicas=[http://192.168.229.219:21100/solr/replace-hdfs-coll1_shard1_replica1/]
>  nUpdates=100 | org.apache.solr.update.PeerSync.sync(PeerSync.java:214)
> 2017-05-18 17:08:48,587 | ERROR | 
> recoveryExecutor-3-thread-2-processing-n:192.168.229.137:21103_solr 
> x:replace-hdfs-coll1_shard1_replica2 s:shard1 c:replace-hdfs-coll1 
> r:core_node3 | Error while trying to recover. 
> core=replace-hdfs-coll1_shard1_replica2:java.lang.NullPointerException
>         at org.apache.solr.update.PeerSync.alreadyInSync(PeerSync.java:339)
>         at org.apache.solr.update.PeerSync.sync(PeerSync.java:222)
>         at 
> org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:376)
>         at 
> org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:221)
>         at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>         at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>         at 
> org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:229)
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>         at java.lang.Thread.run(Thread.java:745)
>  | org.apache.solr.common.SolrException.log(SolrException.java:159)
> 2017-05-18 17:08:48,587 | INFO  | 
> recoveryExecutor-3-thread-2-processing-n:192.168.229.137:21103_solr 
> x:replace-hdfs-coll1_shard1_replica2 s:shard1 c:replace-hdfs-coll1 
> r:core_node3 | Replay not started, or was not successful... still buffering 
> updates. | 
> org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:441)
> 2017-05-18 17:08:48,587 | ERROR | 
> recoveryExecutor-3-thread-2-processing-n:192.168.229.137:21103_solr 
> x:replace-hdfs-coll1_shard1_replica2 s:shard1 c:replace-hdfs-coll1 
> r:core_node3 | Recovery failed - trying again... (0) | 
> org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:478)



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