Date: Wed, 25 Jun 2014 17:35:45 +0400 From: Dmitry Sivachenko <trtrmitya@gmail.com> To: Ronald Klop <ronald-lists@klop.ws> Cc: freebsd-java@freebsd.org Subject: Re: JVM BUG(s) - Hadoop's threads hanging Message-ID: <8FEE8345-E918-474D-BC85-2BD79493DC4D@gmail.com> In-Reply-To: <C040C17A-4FD4-471A-9FA7-E43C7BF657CC@gmail.com> References: <E14F86A5-C7FE-49B5-8A11-F5237C557AE2@gmail.com> <op.xhjxxemtkndu52@ronaldradial.radialsg.local> <1B53E600-B745-459E-98F8-7CEF9FDE77CC@gmail.com> <601C3B4A-8002-4B9C-9B11-01DF32750021@gmail.com> <op.xhsuv5pwkndu52@82-171-231-144.ip.telfort.nl> <C040C17A-4FD4-471A-9FA7-E43C7BF657CC@gmail.com>
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On 21 =D0=B8=D1=8E=D0=BD=D1=8F 2014 =D0=B3., at 15:41, Dmitry Sivachenko = <trtrmitya@gmail.com> wrote: >=20 > On 21 =D0=B8=D1=8E=D0=BD=D1=8F 2014 =D0=B3., at 14:17, Ronald Klop = <ronald-lists@klop.ws> wrote: >>=20 >>=20 >> Mmm, that makes it more though to solve. It would still be nice to = know if running Hadoop on another OS has the same problem. That gives a = pointer where to look. >> And it would be nice to reduce your setup to a reproducible testcase, = so people can replay it. Otherwise it is just a lot of guessing from my = side what is happening internally in the application. I don't know how = easy it is to create that. >> Any news on the mailing-lists of Hadoop? >>=20 >=20 > No news from Hadoop mailing-list. > I will have test results with Linux soon (next week). Okay, I tried Linux: no surprise it just works. I tested hadoop-1.2.1 with Oracle JDK-1.7, OpenJDK-1.6, OpenJDK-1.7. >=20 > If anyone want to dig into it, I can send my config files for hadoop = (almost no special tuning) and a command to run hadoop's bundled = TeraSort benchmark. > I have a cluster with 40 machines (1 for namenode, 1 for = secondarynamenode and the rest are task nodes), but I am sure you don't = need as much h/w to reproduce this. >=20
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