Question

我使用单实例的Accumulo数据库。它工作得很好，直到我尝试摄取多个数据（在this教程之后），然后我的平板电脑服务器死了。

我尝试重新启动它（使用bin/start-all或bin/start-here），但它无效。然后我重新启动整个服务器及其接缝，bin/start-all首先启动平板电脑服务器：

WARN : Using Zookeeper /root/Installs/zookeeper-3.4.6/zookeeper-3.4.6.  Use version 3.3.0 or greater to avoid zookeeper deadlock bug.
Starting monitor on localhost
WARN : Max open files on localhost is 1024, recommend 32768
Starting tablet servers .... done
Starting tablet server on 46.101.229.80
WARN : Max open files on 46.101.229.80 is 1024, recommend 32768
OpenJDK Client VM warning: You have loaded library /root/Installs/hadoop-2.6.0/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
2016-01-27 04:44:18,778 [util.NativeCodeLoader] WARN : Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
2016-01-27 04:44:23,770 [fs.VolumeManagerImpl] WARN : dfs.datanode.synconclose set to false in hdfs-site.xml: data loss is possible on hard system reset or power loss
2016-01-27 04:44:23,803 [server.Accumulo] INFO : Attempting to talk to zookeeper
2016-01-27 04:44:24,246 [server.Accumulo] INFO : ZooKeeper connected and initialized, attempting to talk to HDFS
2016-01-27 04:44:24,802 [server.Accumulo] INFO : Connected to HDFS
Starting master on 46.101.229.80
WARN : Max open files on 46.101.229.80 is 1024, recommend 32768
Starting garbage collector on 46.101.229.80
WARN : Max open files on 46.101.229.80 is 1024, recommend 32768
Starting tracer on 46.101.229.80
WARN : Max open files on 46.101.229.80 is 1024, recommend 32768

但检查显示器平板电脑服务器仍然无法使用。

tserver_46.101.229.80.err - 日志为空，tserver_46.101.229.80.out - 日志显示为：

OpenJDK Client VM warning: You have loaded library /root/Installs/hadoop-2.6.0/lib/native/libhadoop.so.1.0.0 which might have disabled stack guard. The VM will try to fix the stack guard now.
It's highly recommended that you fix the library with 'execstack -c <libfile>', or link it with '-z noexecstack'.
#
# java.lang.OutOfMemoryError: Java heap space
# -XX:OnOutOfMemoryError="kill -9 %p"
#   Executing /bin/sh -c "kill -9 3225"...

如何重新启动平板电脑服务器？

我使用的是DigitalOcean的32位14.04 Linux，Hadoop 2.6，ZooKeeper 3.4.6和Accuulo 1.6.4

Answer 1

如果TabletServer因OutOfMemoryError反复崩溃，则需要通过accumulo-env.sh中的ACCUMULO_TSERVER_OPTS中的-Xmx选项增加JVM最大堆大小。

重启dead accumulo平板电脑服务器

1 个答案: