YARN-6125. The application attempt's diagnostic message should have a maximum size
(Contributed by Andras Piros via Daniel Templeton)
(cherry picked from commit c7a36e6130)
This commit is contained in:
Daniel Templeton
parent
5575328bb6
commit
93219b6454
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@ -2519,6 +2519,11 @@ public class YarnConfiguration extends Configuration {
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public static final int DEFAULT_CLUSTER_LEVEL_APPLICATION_PRIORITY = 0;
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public static final String APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC =
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YARN_PREFIX + "app.attempt.diagnostics.limit.kc";
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public static final int DEFAULT_APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC = 64;
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@Private
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public static boolean isDistributedNodeLabelConfiguration(Configuration conf) {
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return DISTRIBUTED_NODELABEL_CONFIGURATION_TYPE.equals(conf.get(
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@ -2964,4 +2964,19 @@
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<value>3000</value>
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</property>
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<property>
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<description>
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Defines the limit of the diagnostics message of an application
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attempt, in kilo characters (character count * 1024).
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When using ZooKeeper to store application state behavior, it's
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important to limit the size of the diagnostic messages to
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prevent YARN from overwhelming ZooKeeper. In cases where
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yarn.resourcemanager.state-store.max-completed-applications is set to
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a large number, it may be desirable to reduce the value of this property
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to limit the total data stored.
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</description>
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<name>yarn.app.attempt.diagnostics.limit.kc</name>
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<value>64</value>
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</property>
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</configuration>
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@ -53,6 +53,15 @@
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<groupId>org.apache.hadoop</groupId>
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<artifactId>hadoop-annotations</artifactId>
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</dependency>
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<!--
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junit must be before mockito-all on the classpath. mockito-all bundles its
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own copy of the hamcrest classes, but they don't match our junit version.
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-->
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.mockito</groupId>
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<artifactId>mockito-all</artifactId>
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@ -73,11 +82,6 @@
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<groupId>com.google.protobuf</groupId>
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<artifactId>protobuf-java</artifactId>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>commons-io</groupId>
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<artifactId>commons-io</artifactId>
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@ -38,6 +38,7 @@ import java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock;
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import javax.crypto.SecretKey;
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import com.google.common.base.Preconditions;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hadoop.classification.InterfaceAudience;
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@ -118,6 +119,8 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
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"%s State change from %s to %s on event = %s";
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private static final String RECOVERY_MESSAGE =
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"Recovering attempt: %s with final state = %s";
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private static final String DIAGNOSTIC_LIMIT_CONFIG_ERROR_MESSAGE =
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"The value of %s should be a positive integer: %s";
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private static final Log LOG = LogFactory.getLog(RMAppAttemptImpl.class);
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@ -126,6 +129,7 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
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public final static Priority AM_CONTAINER_PRIORITY = recordFactory
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.newRecordInstance(Priority.class);
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static {
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AM_CONTAINER_PRIORITY.setPriority(0);
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}
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@ -170,7 +174,7 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
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// Set to null initially. Will eventually get set
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// if an RMAppAttemptUnregistrationEvent occurs
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private FinalApplicationStatus finalStatus = null;
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private final StringBuilder diagnostics = new StringBuilder();
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private final BoundedAppender diagnostics;
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private int amContainerExitStatus = ContainerExitStatus.INVALID;
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private Configuration conf;
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@ -517,6 +521,45 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
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this.amReq = amReq;
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this.blacklistedNodesForAM = amBlacklistManager;
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final int diagnosticsLimitKC = getDiagnosticsLimitKCOrThrow(conf);
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if (LOG.isDebugEnabled()) {
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LOG.debug(YarnConfiguration.APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC + " : " +
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diagnosticsLimitKC);
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}
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this.diagnostics = new BoundedAppender(diagnosticsLimitKC * 1024);
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}
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private int getDiagnosticsLimitKCOrThrow(final Configuration configuration) {
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try {
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final int diagnosticsLimitKC = configuration.getInt(
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YarnConfiguration.APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC,
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YarnConfiguration.DEFAULT_APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC);
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if (diagnosticsLimitKC <= 0) {
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final String message =
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String.format(DIAGNOSTIC_LIMIT_CONFIG_ERROR_MESSAGE,
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YarnConfiguration.APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC,
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diagnosticsLimitKC);
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LOG.error(message);
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throw new YarnRuntimeException(message);
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}
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return diagnosticsLimitKC;
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} catch (final NumberFormatException ignored) {
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final String diagnosticsLimitKCString = configuration
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.get(YarnConfiguration.APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC);
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final String message =
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String.format(DIAGNOSTIC_LIMIT_CONFIG_ERROR_MESSAGE,
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YarnConfiguration.APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC,
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diagnosticsLimitKCString);
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LOG.error(message);
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throw new YarnRuntimeException(message);
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}
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}
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@Override
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@ -737,6 +780,11 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
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}
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}
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@VisibleForTesting
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void appendDiagnostics(final CharSequence message) {
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this.diagnostics.append(message);
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}
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public int getAMContainerExitStatus() {
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this.readLock.lock();
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try {
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@ -926,8 +974,8 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
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attemptState.getState()));
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}
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diagnostics.append("Attempt recovered after RM restart");
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diagnostics.append(attemptState.getDiagnostics());
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this.diagnostics.append("Attempt recovered after RM restart");
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this.diagnostics.append(attemptState.getDiagnostics());
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this.amContainerExitStatus = attemptState.getAMContainerExitStatus();
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if (amContainerExitStatus == ContainerExitStatus.PREEMPTED) {
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this.attemptMetrics.setIsPreempted();
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@ -1655,8 +1703,7 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
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private void setAMContainerCrashedDiagnosticsAndExitStatus(
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RMAppAttemptContainerFinishedEvent finishEvent) {
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ContainerStatus status = finishEvent.getContainerStatus();
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String diagnostics = getAMContainerCrashedDiagnostics(finishEvent);
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this.diagnostics.append(diagnostics);
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this.diagnostics.append(getAMContainerCrashedDiagnostics(finishEvent));
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this.amContainerExitStatus = status.getExitStatus();
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}
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@ -1825,7 +1872,7 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
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progress = 1.0f;
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RMAppAttemptUnregistrationEvent unregisterEvent =
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(RMAppAttemptUnregistrationEvent) event;
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diagnostics.append(unregisterEvent.getDiagnosticMsg());
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this.diagnostics.append(unregisterEvent.getDiagnosticMsg());
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originalTrackingUrl = sanitizeTrackingUrl(unregisterEvent.getFinalTrackingUrl());
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finalStatus = unregisterEvent.getFinalApplicationStatus();
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}
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@ -2233,4 +2280,115 @@ public class RMAppAttemptImpl implements RMAppAttempt, Recoverable {
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}
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return Collections.EMPTY_SET;
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}
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/**
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* A {@link CharSequence} appender that considers its {@link #limit} as upper
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* bound.
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* <p>
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* When {@link #limit} would be reached on append, past messages will be
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* truncated from head, and a header telling the user about truncation will be
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* prepended, with ellipses in between header and messages.
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* <p>
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* Note that header and ellipses are not counted against {@link #limit}.
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* <p>
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* An example:
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*
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* <pre>
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* {@code
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* // At the beginning it's an empty string
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* final Appendable shortAppender = new BoundedAppender(80);
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* // The whole message fits into limit
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* shortAppender.append(
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* "message1 this is a very long message but fitting into limit\n");
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* // The first message is truncated, the second not
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* shortAppender.append("message2 this is shorter than the previous one\n");
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* // The first message is deleted, the second truncated, the third
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* // preserved
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* shortAppender.append("message3 this is even shorter message, maybe.\n");
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* // The first two are deleted, the third one truncated, the last preserved
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* shortAppender.append("message4 the shortest one, yet the greatest :)");
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* // Current contents are like this:
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* // Diagnostic messages truncated, showing last 80 chars out of 199:
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* // ...s is even shorter message, maybe.
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* // message4 the shortest one, yet the greatest :)
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* }
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* </pre>
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* <p>
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* Note that <tt>null</tt> values are {@link #append(CharSequence) append}ed
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* just like in {@link StringBuilder#append(CharSequence) original
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* implementation}.
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* <p>
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* Note that this class is not thread safe.
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*/
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@VisibleForTesting
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static class BoundedAppender {
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@VisibleForTesting
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static final String TRUNCATED_MESSAGES_TEMPLATE =
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"Diagnostic messages truncated, showing last "
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+ "%d chars out of %d:%n...%s";
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private final int limit;
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private final StringBuilder messages = new StringBuilder();
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private int totalCharacterCount = 0;
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BoundedAppender(final int limit) {
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Preconditions.checkArgument(limit > 0, "limit should be positive");
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this.limit = limit;
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}
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/**
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* Append a {@link CharSequence} considering {@link #limit}, truncating
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* from the head of {@code csq} or {@link #messages} when necessary.
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*
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* @param csq the {@link CharSequence} to append
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* @return this
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*/
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BoundedAppender append(final CharSequence csq) {
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appendAndCount(csq);
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checkAndCut();
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return this;
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}
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private void appendAndCount(final CharSequence csq) {
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final int before = messages.length();
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messages.append(csq);
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final int after = messages.length();
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totalCharacterCount += after - before;
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}
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private void checkAndCut() {
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if (messages.length() > limit) {
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final int newStart = messages.length() - limit;
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messages.delete(0, newStart);
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}
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}
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/**
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* Get current length of messages considering truncates
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* without header and ellipses.
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*
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* @return current length
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*/
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int length() {
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return messages.length();
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}
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/**
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* Get a string representation of the actual contents, displaying also a
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* header and ellipses when there was a truncate.
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*
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* @return String representation of the {@link #messages}
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*/
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@Override
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public String toString() {
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if (messages.length() < totalCharacterCount) {
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return String.format(TRUNCATED_MESSAGES_TEMPLATE, messages.length(),
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totalCharacterCount, messages.toString());
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}
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return messages.toString();
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}
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}
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}
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@ -0,0 +1,116 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.rules.ExpectedException;
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import static org.junit.Assert.assertEquals;
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import static org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt.RMAppAttemptImpl.BoundedAppender;
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/**
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* Test class for {@link BoundedAppender}.
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*/
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public class TestBoundedAppender {
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@Rule
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public ExpectedException expected = ExpectedException.none();
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@Test
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public void initWithZeroLimitThrowsException() {
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expected.expect(IllegalArgumentException.class);
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expected.expectMessage("limit should be positive");
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new BoundedAppender(0);
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}
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@Test
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public void nullAppendedNullStringRead() {
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final BoundedAppender boundedAppender = new BoundedAppender(4);
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boundedAppender.append(null);
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assertEquals("null appended, \"null\" read", "null",
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boundedAppender.toString());
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}
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@Test
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public void appendBelowLimitOnceValueIsReadCorrectly() {
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final BoundedAppender boundedAppender = new BoundedAppender(2);
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boundedAppender.append("ab");
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assertEquals("value appended is read correctly", "ab",
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boundedAppender.toString());
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}
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@Test
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public void appendValuesBelowLimitAreReadCorrectlyInFifoOrder() {
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final BoundedAppender boundedAppender = new BoundedAppender(3);
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boundedAppender.append("ab");
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boundedAppender.append("cd");
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boundedAppender.append("e");
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boundedAppender.append("fg");
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assertEquals("last values appended fitting limit are read correctly",
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String.format(BoundedAppender.TRUNCATED_MESSAGES_TEMPLATE, 3, 7, "efg"),
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boundedAppender.toString());
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}
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@Test
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public void appendLastAboveLimitPreservesLastMessagePostfix() {
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final BoundedAppender boundedAppender = new BoundedAppender(3);
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boundedAppender.append("ab");
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boundedAppender.append("cde");
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boundedAppender.append("fghij");
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assertEquals(
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"last value appended above limit postfix is read correctly", String
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.format(BoundedAppender.TRUNCATED_MESSAGES_TEMPLATE, 3, 10, "hij"),
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boundedAppender.toString());
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}
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@Test
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public void appendMiddleAboveLimitPreservesLastMessageAndMiddlePostfix() {
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final BoundedAppender boundedAppender = new BoundedAppender(3);
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boundedAppender.append("ab");
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boundedAppender.append("cde");
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assertEquals("last value appended above limit postfix is read correctly",
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String.format(BoundedAppender.TRUNCATED_MESSAGES_TEMPLATE, 3, 5, "cde"),
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boundedAppender.toString());
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boundedAppender.append("fg");
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assertEquals(
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"middle value appended above limit postfix and last value are "
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+ "read correctly",
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String.format(BoundedAppender.TRUNCATED_MESSAGES_TEMPLATE, 3, 7, "efg"),
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boundedAppender.toString());
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boundedAppender.append("hijkl");
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assertEquals(
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"last value appended above limit postfix is read correctly", String
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.format(BoundedAppender.TRUNCATED_MESSAGES_TEMPLATE, 3, 12, "jkl"),
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boundedAppender.toString());
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}
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}
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@ -0,0 +1,111 @@
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/**
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* Licensed to the Apache Software Foundation (ASF) under one
|
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* or more contributor license agreements. See the NOTICE file
|
||||
* distributed with this work for additional information
|
||||
* regarding copyright ownership. The ASF licenses this file
|
||||
* to you under the Apache License, Version 2.0 (the
|
||||
* "License"); you may not use this file except in compliance
|
||||
* with the License. You may obtain a copy of the License at
|
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
|
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* Unless required by applicable law or agreed to in writing, software
|
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* distributed under the License is distributed on an "AS IS" BASIS,
|
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
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* limitations under the License.
|
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*/
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package org.apache.hadoop.yarn.server.resourcemanager.rmapp.attempt;
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import org.apache.commons.lang.RandomStringUtils;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
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import org.apache.hadoop.yarn.api.records.ApplicationId;
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import org.apache.hadoop.yarn.conf.YarnConfiguration;
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import org.apache.hadoop.yarn.event.Dispatcher;
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import org.apache.hadoop.yarn.exceptions.YarnRuntimeException;
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import org.apache.hadoop.yarn.server.resourcemanager.RMContext;
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import org.junit.Rule;
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import org.junit.Test;
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import org.junit.rules.ExpectedException;
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import static org.junit.Assert.assertEquals;
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import static org.mockito.Mockito.mock;
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import static org.mockito.Mockito.when;
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/**
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* Testing {@link RMAppAttemptImpl#diagnostics} scenarios.
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*/
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public class TestRMAppAttemptImplDiagnostics {
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@Rule
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public ExpectedException expectedException = ExpectedException.none();
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@Test
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public void whenCreatedWithDefaultConfigurationSuccess() {
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final Configuration configuration = new Configuration();
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configuration.setInt(YarnConfiguration.APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC,
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YarnConfiguration.DEFAULT_APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC);
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createRMAppAttemptImpl(configuration);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenCreatedWithWrongConfigurationError() {
|
||||
final Configuration configuration = new Configuration();
|
||||
configuration.setInt(YarnConfiguration.APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC, 0);
|
||||
|
||||
expectedException.expect(YarnRuntimeException.class);
|
||||
|
||||
createRMAppAttemptImpl(configuration);
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenAppendedWithinLimitMessagesArePreserved() {
|
||||
final Configuration configuration = new Configuration();
|
||||
configuration.setInt(YarnConfiguration.APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC, 1);
|
||||
|
||||
final RMAppAttemptImpl appAttempt = createRMAppAttemptImpl(configuration);
|
||||
|
||||
final String withinLimit = RandomStringUtils.random(1024);
|
||||
appAttempt.appendDiagnostics(withinLimit);
|
||||
|
||||
assertEquals("messages within limit should be preserved", withinLimit,
|
||||
appAttempt.getDiagnostics());
|
||||
}
|
||||
|
||||
@Test
|
||||
public void whenAppendedBeyondLimitMessagesAreTruncated() {
|
||||
final Configuration configuration = new Configuration();
|
||||
configuration.setInt(YarnConfiguration.APP_ATTEMPT_DIAGNOSTICS_LIMIT_KC, 1);
|
||||
|
||||
final RMAppAttemptImpl appAttempt = createRMAppAttemptImpl(configuration);
|
||||
|
||||
final String beyondLimit = RandomStringUtils.random(1025);
|
||||
appAttempt.appendDiagnostics(beyondLimit);
|
||||
|
||||
final String truncated = String.format(
|
||||
RMAppAttemptImpl.BoundedAppender.TRUNCATED_MESSAGES_TEMPLATE, 1024,
|
||||
1025, beyondLimit.substring(1));
|
||||
|
||||
assertEquals("messages beyond limit should be truncated", truncated,
|
||||
appAttempt.getDiagnostics());
|
||||
}
|
||||
|
||||
private RMAppAttemptImpl createRMAppAttemptImpl(
|
||||
final Configuration configuration) {
|
||||
final ApplicationAttemptId mockApplicationAttemptId =
|
||||
mock(ApplicationAttemptId.class);
|
||||
final ApplicationId mockApplicationId = mock(ApplicationId.class);
|
||||
when(mockApplicationAttemptId.getApplicationId())
|
||||
.thenReturn(mockApplicationId);
|
||||
|
||||
final RMContext mockRMContext = mock(RMContext.class);
|
||||
final Dispatcher mockDispatcher = mock(Dispatcher.class);
|
||||
when(mockRMContext.getDispatcher()).thenReturn(mockDispatcher);
|
||||
|
||||
return new RMAppAttemptImpl(mockApplicationAttemptId, mockRMContext, null,
|
||||
null, null, configuration, false, null);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue