Shalin Shekhar Mangar created SOLR-6583:
-------------------------------------------
Summary: Resuming connection with ZooKeeper causes log replay code
to run
Key: SOLR-6583
URL: https://issues.apache.org/jira/browse/SOLR-6583
Project: Solr
Issue Type: Bug
Components: SolrCloud
Affects Versions: 4.10.1
Reporter: Shalin Shekhar Mangar
Assignee: Shalin Shekhar Mangar
Priority: Minor
Fix For: 5.0, Trunk
If a node is partitioned from ZooKeeper for an extended period of time then
upon resuming connection, the node re-registers itself causing recoverFromLog()
method to be executed which fails with the following exception:
{code}
8091124 [Thread-71] ERROR org.apache.solr.update.UpdateLog – Error inspecting
tlog
tlog{file=/home/ubuntu/shalin-lusolr/solr/example/solr/collection_5x3_shard5_replica3/data/tlog/tlog.0000000000000009869
refcount=2}
java.nio.channels.ClosedChannelException
at sun.nio.ch.FileChannelImpl.ensureOpen(FileChannelImpl.java:99)
at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:678)
at
org.apache.solr.update.ChannelFastInputStream.readWrappedStream(TransactionLog.java:784)
at
org.apache.solr.common.util.FastInputStream.refill(FastInputStream.java:89)
at
org.apache.solr.common.util.FastInputStream.read(FastInputStream.java:125)
at java.io.InputStream.read(InputStream.java:101)
at
org.apache.solr.update.TransactionLog.endsWithCommit(TransactionLog.java:218)
at org.apache.solr.update.UpdateLog.recoverFromLog(UpdateLog.java:800)
at org.apache.solr.cloud.ZkController.register(ZkController.java:834)
at org.apache.solr.cloud.ZkController$1.command(ZkController.java:271)
at
org.apache.solr.common.cloud.ConnectionManager$1$1.run(ConnectionManager.java:166)
8091125 [Thread-71] ERROR org.apache.solr.update.UpdateLog – Error inspecting
tlog
tlog{file=/home/ubuntu/shalin-lusolr/solr/example/solr/collection_5x3_shard5_replica3/data/tlog/tlog.0000000000000009870
refcount=2}
java.nio.channels.ClosedChannelException
at sun.nio.ch.FileChannelImpl.ensureOpen(FileChannelImpl.java:99)
at sun.nio.ch.FileChannelImpl.read(FileChannelImpl.java:678)
at
org.apache.solr.update.ChannelFastInputStream.readWrappedStream(TransactionLog.java:784)
at
org.apache.solr.common.util.FastInputStream.refill(FastInputStream.java:89)
at
org.apache.solr.common.util.FastInputStream.read(FastInputStream.java:125)
at java.io.InputStream.read(InputStream.java:101)
at
org.apache.solr.update.TransactionLog.endsWithCommit(TransactionLog.java:218)
at org.apache.solr.update.UpdateLog.recoverFromLog(UpdateLog.java:800)
at org.apache.solr.cloud.ZkController.register(ZkController.java:834)
at org.apache.solr.cloud.ZkController$1.command(ZkController.java:271)
at
org.apache.solr.common.cloud.ConnectionManager$1$1.run(ConnectionManager.java:166)
{code}
This is because the recoverFromLog uses transaction log references that were
collected at startup and are no longer valid.
We shouldn't even be running recoverFromLog code for ZK re-connect.
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