What is a common first step in troubleshooting when a Hadoop DataNode becomes unresponsive?
- Check Network Connectivity
- Increase DataNode Memory
- Modify Hadoop Configuration
- Restart Hadoop Cluster
A common first step in troubleshooting an unresponsive DataNode is to check network connectivity. Network issues can lead to communication problems between nodes, impacting the DataNode's responsiveness. Ensuring proper connectivity is crucial for the smooth operation of a Hadoop cluster.
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