[ACCUMULO-233] rfile rename failure can lead to unavailability

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Cannot Reproduce
• Component/s: tserver
• Assignee: Unassigned
• Reporter: Adam Fuchs
• Created: 22/Dec/11 20:21
• Updated: 21/Nov/13 21:09
• Resolved: 21/Nov/13 21:09

Description

During a minor compaction, a rename from *.rf_tmp to *.rf fails. This would be OK, except that we left a reference to *.rf in the !METADATA table. We need to make sure that if any part of the compaction fails we properly roll back to a good state. Could this be an opportunity for a FATE operation?

20 15:03:17,033 [tabletserver.Tablet] WARN : tserver:servername Tablet !0;~;!0< failed to rename /table_info/00790_00002.rf after MinC, will retry in 60 secs...
java.io.IOException: Call to servername/10.20.30.40:9000 failed on local exception: java.io.IOException: Too many open files
        at org.apache.hadoop.ipc.Client.wrapException(Client.java:775)
        at org.apache.hadoop.ipc.Client.call(Client.java:743)
        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
        at $Proxy0.rename(Unknown Source)
        at sun.reflect.GeneratedMethodAccessor26.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
        at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
        at $Proxy0.rename(Unknown Source)
        at org.apache.hadoop.hdfs.DFSClient.rename(DFSClient.java:556)
        at org.apache.hadoop.hdfs.DistributedFileSystem.rename(DistributedFileSystem.java:211)
        at cloudbase.server.tabletserver.Tablet$DatafileManager.bringMinorCompactionOnline(Tablet.java:748)
        at cloudbase.server.tabletserver.Tablet.minorCompact(Tablet.java:1999)
        at cloudbase.server.tabletserver.Tablet.access$3800(Tablet.java:123)
        at cloudbase.server.tabletserver.Tablet$MinorCompactionTask.run(Tablet.java:2070)
        at cloudbase.core.util.LoggingRunnable.run(LoggingRunnable.java:18)
        at cloudtrace.instrument.TraceRunnable.run(TraceRunnable.java:31)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: Too many open files
        at sun.nio.ch.EPollArrayWrapper.epollCreate(Native Method)
        at sun.nio.ch.EPollArrayWrapper.<init>(EPollArrayWrapper.java:69)
        at sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:52)
        at sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:18)
        at org.apache.hadoop.net.SocketIOWithTimeout$SelectorPool.get(SocketIOWithTimeout.java:407)
        at org.apache.hadoop.net.SocketIOWithTimeout$SelectorPool.select(SocketIOWithTimeout.java:322)
        at org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:157)
        at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:155)
        at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:128)
        at java.io.FilterInputStream.read(FilterInputStream.java:116)
        at org.apache.hadoop.ipc.Client$Connection$PingInputStream.read(Client.java:276)
        at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)
        at java.io.BufferedInputStream.read(BufferedInputStream.java:237)
        at java.io.DataInputStream.readInt(DataInputStream.java:370)
        at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:501)
        at org.apache.hadoop.ipc.Client$Connection.run(Client.java:446)
20 15:04:17,641 [tabletserver.Tablet] WARN : tserver:servername Target map file already exist /accumulo/tables/!0/table_info/00790_00002.rf
20 15:04:17,897 [tabletserver.FileManager] ERROR: tserver:servername Failed to open file /accumulo/tables/!0/table_info/00790_00002.rf File does not exist: /accumulo/tables/!0/table_info/00790_00002.rf