Hi Agateaa, Impressive bug description.
Can you confirm HCat server was up (inspite of thread dump/GC) and for all practical purposes commands were getting executed in a normal fashion for fairly good time after the GC issues were noticed on log? Unless there is a self-healing effect built-in :-) /timeout after which the error is automatically invalid/system is reset/space is reclaimed, there must be a way it would have directly impact the system, and not just known because one checks the log. I do not have the same patched environment as yours, but would you care to unpatch Thrift-1468 and then check if your system bug behavior is in sync with - https://issues.apache.org/jira/browse/THRIFT-1205 https://issues.apache.org/jira/browse/THRIFT-1468 https://issues.apache.org/jira/browse/HIVE-2715 Or especially since you did not enter arbitrary data, can you confirm you get usual if you do enter provide arbitrary data? Thanks Rekha From: agateaaa <agate...@gmail.com<mailto:agate...@gmail.com>> Reply-To: <hcatalog-user@incubator.apache.org<mailto:hcatalog-user@incubator.apache.org>> Date: Mon, 27 Aug 2012 10:38:01 -0700 To: <hcatalog-user@incubator.apache.org<mailto:hcatalog-user@incubator.apache.org>> Subject: Re: HCatalog Thrift Error Correction: I have a fairly small server (VM) 1GB RAM and 1 CPU and using HCatalog Version 0.4, Hive 0.9 (patched for HIVE-3008) with Thrift 0.7 (patched for THRIFT-1468) On Mon, Aug 27, 2012 at 10:27 AM, agateaaa <agate...@gmail.com<mailto:agate...@gmail.com>> wrote: Hi, I got this error over the weekend hcat.err log file. Noticed at the approximately same time Full GC was happening in the gc logs. Exception in thread "pool-1-thread-200" java.lang.OutOfMemoryError: Java heap space at org.apache.thrift.protocol.TBinaryProtocol.readStringBody(TBinaryProtocol.java:353) at org.apache.thrift.protocol.TBinaryProtocol.readMessageBegin(TBinaryProtocol.java:215) at org.apache.hadoop.hive.metastore.TUGIBasedProcessor.process(TUGIBasedProcessor.java:81) at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:176) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) Exception in thread "pool-1-thread-201" java.lang.OutOfMemoryError: Java heap space at org.apache.thrift.protocol.TBinaryProtocol.readStringBody(TBinaryProtocol.java:353) at org.apache.thrift.protocol.TBinaryProtocol.readMessageBegin(TBinaryProtocol.java:215) at org.apache.hadoop.hive.metastore.TUGIBasedProcessor.process(TUGIBasedProcessor.java:81) at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:176) 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) Exception in thread "pool-1-thread-202" java.lang.OutOfMemoryError: Java heap space at org.apache.thrift.protocol.TBinaryProtocol.readStringBody(TBinaryProtocol.java:353) at org.apache.thrift.protocol.TBinaryProtocol.readMessageBegin(TBinaryProtocol.java:215) at org.apache.hadoop.hive.metastore.TUGIBasedProcessor.process(TUGIBasedProcessor.java:81) at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:176) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) Exception in thread "pool-1-thread-203" java.lang.OutOfMemoryError: Java heap space at org.apache.thrift.protocol.TBinaryProtocol.readStringBody(TBinaryProtocol.java:353) at org.apache.thrift.protocol.TBinaryProtocol.readMessageBegin(TBinaryProtocol.java:215) at org.apache.hadoop.hive.metastore.TUGIBasedProcessor.process(TUGIBasedProcessor.java:81) at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:176) 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) I noticed that the hcatalog server had not shutdown, don't see any other abnormality in the logs Searching led me to these two thrift issues https://issues.apache.org/jira/browse/THRIFT-601 https://issues.apache.org/jira/browse/THRIFT-1205 Only difference is that in my case HCatalog server did not crash and I wasn't trying to send any arbritary data to the thrift server at the telnet port I have a fairly small server (VM) 1GB RAM and 1 CPU and using HCatalog Version 0.4, Hive 0.9 (patched HIVE-3008) with Thrift 0.7 (patched for THRIFT-1438) Has anyone seen this before ? Thanks - A
