Hey, We're trying to restore a snapshot of a relatively big table (20TB) using hbase 0.94.6-cdh4.5.0 and we're getting timeouts doing so. We increased the timeout configurations(hbase.snapshot.master.timeoutMillis, hbase.snapshot.region.timeout, hbase.snapshot.master.timeout.millis) to 10 minutes but we're still experiencing the timeouts. Here's the error and stack trace (table name obfuscated just because):
ERROR: org.apache.hadoop.hbase.snapshot.HBaseSnapshotException: org.apache.hadoop.hbase.snapshot.HBaseSnapshotException: Snapshot { ss*****-1443136710408 table=******** type=FLUSH } had an error. kiji.prod.table.site.DI-1019-1443136710408 not found in proclist [] at org.apache.hadoop.hbase.master.snapshot.SnapshotManager.isSnapshotDone(SnapshotManager.java:360) at org.apache.hadoop.hbase.master.HMaster.isSnapshotDone(HMaster.java:2075) at sun.reflect.GeneratedMethodAccessor36.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:320) at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1428) Caused by: org.apache.hadoop.hbase.errorhandling.TimeoutException via timer-java.util.Timer@8ad0d5c:org.apache.hadoop.hbase.errorhandling.TimeoutException: Timeout elapsed! Source:Timeout caused Foreign Exception Start:1443136713121, End:1443137313121, diff:600000, max:600000 ms at org.apache.hadoop.hbase.errorhandling.ForeignExceptionDispatcher.rethrowException(ForeignExceptionDispatcher.java:85) at org.apache.hadoop.hbase.master.snapshot.TakeSnapshotHandler.rethrowExceptionIfFailed(TakeSnapshotHandler.java:285) at org.apache.hadoop.hbase.master.snapshot.SnapshotManager.isSnapshotDone(SnapshotManager.java:350) ... 6 more Caused by: org.apache.hadoop.hbase.errorhandling.TimeoutException: Timeout elapsed! Source:Timeout caused Foreign Exception Start:1443136713121, End:1443137313121, diff:600000, max:600000 ms at org.apache.hadoop.hbase.errorhandling.TimeoutExceptionInjector$1.run(TimeoutExceptionInjector.java:68) at java.util.TimerThread.mainLoop(Timer.java:555) at java.util.TimerThread.run(Timer.java:505) We could increase the timeout again but we'd like to solicit some feedback before trying that. First, does the timeout necessarily mean that the restore failed or could it be still running asynchronously and eventually completing? What's involved in the snapshot restore that could be useful in informing what timeout value would be appropriate for this operation? Thanks! -- Alex