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Current Hama requires JRE 1.6 7 or higher and ssh to be set up between nodes in the cluster:
- hadoop -0.20.2 (non-secure version), since Hama 0.5.0 we are using hadoop-0.11.x or 2.x
- Sun Java JDK 1.67.x or higher version
For additional information consult our CompatibilityTable.
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to stop all the daemons running on your cluster.
Enabling Fault Tolerance Service
By default, FT service is disabled. To enable Fault Tolerance Service, you can set below properties like below:
| No Format |
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<property> <name>bsp.ft.enabled</name> <value>true</value> <description>Enable Fault Tolerance in BSP Task execution.</description> </property> <property> <name>bsp.checkpoint.enabled</name> <value>true</value> <description>Enable Hama to checkpoint the messages transferred among BSP tasks during the BSP synchronization period.</description> </property> <property> <name>bsp.checkpoint.interval</name> <value>10</value> <description>If bsp.checkpoint.enabled is set to true, the checkpointing is initiated on the valueth synchronization process of BSP tasks.</description> </property> |
Run the BSP Examples
Run the command:
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