问题：agent启动后跑到一半报错卡死

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解决：修改flume_ng启动脚本中jvm参数：

vi /opt/cloudera/parcels/CDH/lib/flume-ng/bin/flume-ng

把 JAVA_OPTS="-Xmx20m" 改为 JAVA_OPTS="-Xmx2048m"

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重启agent，顺畅running