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From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SOLR-4519) corrupt tlog causes fullCopy download index files every time reboot a node
Date Fri, 01 Mar 2013 14:03:13 GMT

    [ https://issues.apache.org/jira/browse/SOLR-4519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13590529#comment-13590529
] 

Mark Miller commented on SOLR-4519:
-----------------------------------

I filed SOLR-4521
                
> corrupt tlog causes fullCopy download index files every time reboot a node
> --------------------------------------------------------------------------
>
>                 Key: SOLR-4519
>                 URL: https://issues.apache.org/jira/browse/SOLR-4519
>             Project: Solr
>          Issue Type: Bug
>    Affects Versions: 4.0
>         Environment: The solrcloud is implemented on three servers. There are three solr
instance on each server. The collection has three shards. Every shard has three replica. Replicas
in same shard run in solr instance on different server.
>            Reporter: Simon Scofield
>
> There are two questions:
> 1. The tlog of one replica of shard1 is damaged by some reason. We are still looking
for the reason. Please give some clue if you are familia with this problem.
> 2. The error replica successed to recovery by fullcopy download index files from leader.
Then I killed the instance and started it again, the recovery process still is fullcopy download.
In my opinion, after the first time fullcopy recovery, the tlog should be fixed. Here is some
log: 
> 2013-02-28 15:04:58,622 INFO org.apache.solr.cloud.ZkController:757 - Core needs to recover:metadata
> 2013-02-28 15:04:58,622 INFO org.apache.solr.update.DefaultSolrCoreState:214 - Running
recovery - first canceling any ongoing recovery
> 2013-02-28 15:04:58,625 INFO org.apache.solr.cloud.RecoveryStrategy:217 - Starting recovery
process.  core=metadata recoveringAfterStartup=true
> 2013-02-28 15:04:58,626 INFO org.apache.solr.common.cloud.ZkStateReader:295 - Updating
cloud state from ZooKeeper...
> 2013-02-28 15:04:58,628 ERROR org.apache.solr.update.UpdateLog:957 - Exception reading
versions from log
> java.io.EOFException
>         at org.apache.solr.common.util.FastInputStream.readUnsignedByte(FastInputStream.java:72)
>         at org.apache.solr.common.util.FastInputStream.readInt(FastInputStream.java:206)
>         at org.apache.solr.update.TransactionLog$ReverseReader.next(TransactionLog.java:705)
>         at org.apache.solr.update.UpdateLog$RecentUpdates.update(UpdateLog.java:906)
>         at org.apache.solr.update.UpdateLog$RecentUpdates.access$000(UpdateLog.java:846)
>         at org.apache.solr.update.UpdateLog.getRecentUpdates(UpdateLog.java:996)
>         at org.apache.solr.cloud.RecoveryStrategy.doRecovery(RecoveryStrategy.java:256)
>         at org.apache.solr.cloud.RecoveryStrategy.run(RecoveryStrategy.java:220)
> 2013-02-28 15:05:01,857 INFO org.apache.solr.cloud.RecoveryStrategy:399 - Begin buffering
updates. core=metadata
> 2013-02-28 15:05:01,857 INFO org.apache.solr.update.UpdateLog:1015 - Starting to buffer
updates. FSUpdateLog{state=ACTIVE, tlog=null}
> 2013-02-28 15:05:01,857 INFO org.apache.solr.cloud.RecoveryStrategy:126 - Attempting
to replicate from http://23.61.21.121:65201/solr/metadata/. core=metadata
> 2013-02-28 15:05:02,882 INFO org.apache.solr.handler.SnapPuller:305 - Master's generation:
6993
> 2013-02-28 15:05:02,882 INFO org.apache.solr.handler.SnapPuller:306 - Slave's generation:
6993
> 2013-02-28 15:05:02,882 INFO org.apache.solr.handler.SnapPuller:307 - Starting replication
process
> 2013-02-28 15:05:02,893 INFO org.apache.solr.handler.SnapPuller:312 - Number of files
in latest index in master: 422
> 2013-02-28 15:05:02,897 INFO org.apache.solr.handler.SnapPuller:325 - Starting download
to /solr/nodes/node1/bin/../solr/metadata/data/index.20130228150502893 fullCopy=true
> 2013-02-28 15:33:55,848 INFO org.apache.solr.handler.SnapPuller:334 - Total time taken
for download : 1732 secs (The size of index files is 94G)

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