我有一个EMR设置，应该预先配置Hive和Hadoop。
到目前为止，正如我所看到的任何需要MapReduce Job的命令一样，Hive失败了。
FAILED: Execution Error, return code 2 from org.apache.hadoop.hive.ql.exec.mr.MapRedTask
所以，我去了Job Job URL，这是相关的输出：
Diagnostics: Could not initialize class java.net.NetworkInterface
java.lang.NoClassDefFoundError: Could not initialize class java.net.NetworkInterface
at org.apache.hadoop.net.NetUtils.isLocalAddress(NetUtils.java:690)
...
任何有关此错误的帮助都将受到赞赏......
堆栈跟踪指向代码：
答案 0 :(得分：0)
在尝试运行datanode时，我得到了这个精确的堆栈跟踪。 colours=rev(c("black","red","yellow","green","blue", "blue2")) # Colour scheme for plot
p <- ggplot(UCCO2_m, aes(date_dates, variable)) +
geom_tile(aes(fill = UCCO2_m$value)) +
scale_fill_gradientn(guide = "colourbar",
colours = colours,
na.value = "white",
expression(Carbon-Concentration[mg/l]))
# Add some titles and stuff
p <- p + labs(title = "Carbon Concentration below Watertable at the Upslope Station", x = "Month - Year", y = "Depth (cm)")
#axis.text.x for x axis only
p<-p + theme(axis.line=element_blank(),
axis.text.x= element_text(angle=45, vjust=0.5),
panel.grid.major=element_blank(),
panel.grid.minor=element_blank(),
panel.border=element_blank(),
plot.background=element_blank())
#Fix axis
p <- p + scale_x_datetime(breaks = date_breaks("months"), labels = date_format("%b"))
windows()
plot(p)`
接口的IPv4地址在DNS中是可向前解析的，但它不是可反向解析的（即我可以将主机名解析为其IP但是反向查找IP到相应的主机名不起作用）。一旦从IP到主机名的PTR记录被创建，datanode就按预期启动了。