admin HYDERABAD, India 16 Questions 30 Answers 3 Best Answers 99 Points View Profile 7 admin Teacher Asked: January 7, 2020In: Technology What is GC Overhead Limit Exceeded Hadoop 7 Hi All, When i tried to list of files in my hdfs folder by using hdfs fs -ls /myfolder command i am facing GC Overhead Limit exceeded exception error in hadoop.Please help me how to solve this error. big datagc overhead limithadoop Share Facebook 2 Answers Voted Oldest Recent Anonymous Added an answer on January 7, 2020 at 4:39 pm This answer was edited. Hello Srilakshmi, GC Overhead Limit exception error will come when doing data copy from local to hdfs or hdfs to local and setup a replication for hdfs files at that time also this GC overhead limit exceeded error will come. We need to setup HADOOP_CLIENT_OPTS fix this error. export HADOOP_CLIENT_OPTS=”-XX:-UseGCOverheadLimit -Xmx4096m” HADOOP_CLIENT_OPTS – All hadoop components run as a client. This was needed because all the hadoop commands run as a client. 3 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp srilakshmi 17 Questions 13 Answers 2 Best Answers 83 Points View Profile Best Answer srilakshmi Teacher Added an answer on January 7, 2020 at 4:30 pm Hello , Generally GC Overhead limit exceeded error will come in below senories. If the hdfs folder having more then 1 million files and if you tried to run hdfs commands like -ls,-du -h,-copyToLocal etc. How to solve GC Overhead limit exceeded error Hadoop commands we run on edgenode so increase hadoop client heap memory on fly . Open hadoop edge node in putty Login to your account copy paste below command on your terminal to solve GC Overhead limit exceeded error in your hadoop environment. export HADOOP_CLIENT_OPTS=”$HADOOP_OPTS -Xmx5g” The above command will use full to fix GC Overhead limit exceeded error in hadoop and 5g indicates heap memory you can increase the value based on your requirement. 3 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Connect with GMAIL Account without Manual signup/Login: Attachment Select file Browse Featured image Select file Browse Add a video to describe the problem better. Video type Youtube Vimeo Dialymotion Facebook Choose from here the video type. Video ID Put here the video id : https://www.youtube.com/watch?v=sdUUx5FdySs Ex: 'sdUUx5FdySs'. Which is the trending website for Question & Answers ? ( Askdoubts.com ) ( Askdoubts.com ) Save my name, email, and website in this browser for the next time I comment.