Azure Batch SDK for Java. Run large-scale parallel and HPC batch jobs with pools, jobs, tasks, and compute nodes. Triggers: "BatchClient java", "azure batch java", "batch pool java", "batch job java", "HPC java", "parallel computing java".
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Client library for running large-scale parallel and high-performance computing (HPC) batch jobs in Azure.
<dependency>
<groupId>com.azure</groupId>
<artifactId>azure-compute-batch</artifactId>
<version>1.0.0-beta.5</version>
</dependency>
AZURE_BATCH_ENDPOINT=https://<account>.<region>.batch.azure.com
AZURE_BATCH_ACCOUNT=<account-name>
AZURE_BATCH_ACCESS_KEY=<account-key>
import com.azure.compute.batch.BatchClient;
import com.azure.compute.batch.BatchClientBuilder;
import com.azure.identity.DefaultAzureCredentialBuilder;
BatchClient batchClient = new BatchClientBuilder()
.credential(new DefaultAzureCredentialBuilder().build())
.endpoint(System.getenv("AZURE_BATCH_ENDPOINT"))
.buildClient();
import com.azure.compute.batch.BatchAsyncClient;
BatchAsyncClient batchAsyncClient = new BatchClientBuilder()
.credential(new DefaultAzureCredentialBuilder().build())
.endpoint(System.getenv("AZURE_BATCH_ENDPOINT"))
.buildAsyncClient();
import com.azure.core.credential.AzureNamedKeyCredential;
String accountName = System.getenv("AZURE_BATCH_ACCOUNT");
String accountKey = System.getenv("AZURE_BATCH_ACCESS_KEY");
AzureNamedKeyCredential sharedKeyCreds = new AzureNamedKeyCredential(accountName, accountKey);
BatchClient batchClient = new BatchClientBuilder()
.credential(sharedKeyCreds)
.endpoint(System.getenv("AZURE_BATCH_ENDPOINT"))
.buildClient();
| Concept | Description |
|---|---|
| Pool | Collection of compute nodes that run tasks |
| Job | Logical grouping of tasks |
| Task | Unit of computation (command/script) |
| Node | VM that executes tasks |
| Job Schedule | Recurring job creation |
import com.azure.compute.batch.models.*;
batchClient.createPool(new BatchPoolCreateParameters("myPoolId", "STANDARD_DC2s_V2")
.setVirtualMachineConfiguration(
new VirtualMachineConfiguration(
new BatchVmImageReference()
.setPublisher("Canonical")
.setOffer("UbuntuServer")
.setSku("22_04-lts")
.setVersion("latest"),
"batch.node.ubuntu 22.04"))
.setTargetDedicatedNodes(2)
.setTargetLowPriorityNodes(0), null);
BatchPool pool = batchClient.getPool("myPoolId");
System.out.println("Pool state: " + pool.getState());
System.out.println("Current dedicated nodes: " + pool.getCurrentDedicatedNodes());
import com.azure.core.http.rest.PagedIterable;
PagedIterable<BatchPool> pools = batchClient.listPools();
for (BatchPool pool : pools) {
System.out.println("Pool: " + pool.getId() + ", State: " + pool.getState());
}
import com.azure.core.util.polling.SyncPoller;
BatchPoolResizeParameters resizeParams = new BatchPoolResizeParameters()
.setTargetDedicatedNodes(4)
.setTargetLowPriorityNodes(2);
SyncPoller<BatchPool, BatchPool> poller = batchClient.beginResizePool("myPoolId", resizeParams);
poller.waitForCompletion();
BatchPool resizedPool = poller.getFinalResult();
BatchPoolEnableAutoScaleParameters autoScaleParams = new BatchPoolEnableAutoScaleParameters()
.setAutoScaleEvaluationInterval(Duration.ofMinutes(5))
.setAutoScaleFormula("$TargetDedicatedNodes = min(10, $PendingTasks.GetSample(TimeInterval_Minute * 5));");
batchClient.enablePoolAutoScale("myPoolId", autoScaleParams);
SyncPoller<BatchPool, Void> deletePoller = batchClient.beginDeletePool("myPoolId");
deletePoller.waitForCompletion();
batchClient.createJob(
new BatchJobCreateParameters("myJobId", new BatchPoolInfo().setPoolId("myPoolId"))
.setPriority(100)
.setConstraints(new BatchJobConstraints()
.setMaxWallClockTime(Duration.ofHours(24))
.setMaxTaskRetryCount(3)),
null);
BatchJob job = batchClient.getJob("myJobId", null, null);
System.out.println("Job state: " + job.getState());
PagedIterable<BatchJob> jobs = batchClient.listJobs(new BatchJobsListOptions());
for (BatchJob job : jobs) {
System.out.println("Job: " + job.getId() + ", State: " + job.getState());
}
BatchTaskCountsResult counts = batchClient.getJobTaskCounts("myJobId");
System.out.println("Active: " + counts.getTaskCounts().getActive());
System.out.println("Running: " + counts.getTaskCounts().getRunning());
System.out.println("Completed: " + counts.getTaskCounts().getCompleted());
BatchJobTerminateParameters terminateParams = new BatchJobTerminateParameters()
.setTerminationReason("Manual termination");
BatchJobTerminateOptions options = new BatchJobTerminateOptions().setParameters(terminateParams);
SyncPoller<BatchJob, BatchJob> poller = batchClient.beginTerminateJob("myJobId", options, null);
poller.waitForCompletion();
SyncPoller<BatchJob, Void> deletePoller = batchClient.beginDeleteJob("myJobId");
deletePoller.waitForCompletion();
BatchTaskCreateParameters task = new BatchTaskCreateParameters("task1", "echo 'Hello World'");
batchClient.createTask("myJobId", task);
batchClient.createTask("myJobId", new BatchTaskCreateParameters("task2", "cmd /c exit 3")
.setExitConditions(new ExitConditions()
.setExitCodeRanges(Arrays.asList(
new ExitCodeRangeMapping(2, 4,
new ExitOptions().setJobAction(BatchJobActionKind.TERMINATE)))))
.setUserIdentity(new UserIdentity()
.setAutoUser(new AutoUserSpecification()
.setScope(AutoUserScope.TASK)
.setElevationLevel(ElevationLevel.NON_ADMIN))),
null);
List<BatchTaskCreateParameters> taskList = Arrays.asList(
new BatchTaskCreateParameters("task1", "echo Task 1"),
new BatchTaskCreateParameters("task2", "echo Task 2"),
new BatchTaskCreateParameters("task3", "echo Task 3")
);
BatchTaskGroup taskGroup = new BatchTaskGroup(taskList);
BatchCreateTaskCollectionResult result = batchClient.createTaskCollection("myJobId", taskGroup);
List<BatchTaskCreateParameters> tasks = new ArrayList<>();
for (int i = 0; i < 1000; i++) {
tasks.add(new BatchTaskCreateParameters("task" + i, "echo Task " + i));
}
batchClient.createTasks("myJobId", tasks);
BatchTask task = batchClient.getTask("myJobId", "task1");
System.out.println("Task state: " + task.getState());
System.out.println("Exit code: " + task.getExecutionInfo().getExitCode());
PagedIterable<BatchTask> tasks = batchClient.listTasks("myJobId");
for (BatchTask task : tasks) {
System.out.println("Task: " + task.getId() + ", State: " + task.getState());
}
import com.azure.core.util.BinaryData;
import java.nio.charset.StandardCharsets;
BinaryData stdout = batchClient.getTaskFile("myJobId", "task1", "stdout.txt");
System.out.println(new String(stdout.toBytes(), StandardCharsets.UTF_8));
batchClient.terminateTask("myJobId", "task1", null, null);
PagedIterable<BatchNode> nodes = batchClient.listNodes("myPoolId", new BatchNodesListOptions());
for (BatchNode node : nodes) {
System.out.println("Node: " + node.getId() + ", State: " + node.getState());
}
SyncPoller<BatchNode, BatchNode> rebootPoller = batchClient.beginRebootNode("myPoolId", "nodeId");
rebootPoller.waitForCompletion();
BatchNodeRemoteLoginSettings settings = batchClient.getNodeRemoteLoginSettings("myPoolId", "nodeId");
System.out.println("IP: " + settings.getRemoteLoginIpAddress());
System.out.println("Port: " + settings.getRemoteLoginPort());
batchClient.createJobSchedule(new BatchJobScheduleCreateParameters("myScheduleId",
new BatchJobScheduleConfiguration()
.setRecurrenceInterval(Duration.ofHours(6))
.setDoNotRunUntil(OffsetDateTime.now().plusDays(1)),
new BatchJobSpecification(new BatchPoolInfo().setPoolId("myPoolId"))
.setPriority(50)),
null);
BatchJobSchedule schedule = batchClient.getJobSchedule("myScheduleId");
System.out.println("Schedule state: " + schedule.getState());
import com.azure.compute.batch.models.BatchErrorException;
import com.azure.compute.batch.models.BatchError;
try {
batchClient.getPool("nonexistent-pool");
} catch (BatchErrorException e) {
BatchError error = e.getValue();
System.err.println("Error code: " + error.getCode());
System.err.println("Message: " + error.getMessage().getValue());
if ("PoolNotFound".equals(error.getCode())) {
System.err.println("The specified pool does not exist.");
}
}
azure-resourcemanager-batch supports managed identitiescreateTaskCollection or createTasks for multiple tasksgetJobTaskCounts to track progressmaxWallClockTime and maxTaskRetryCount