org.apache.hadoop.hbase.client.FailureInfo Maven / Gradle / Ivy
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* to you under the Apache License, Version 2.0 (the
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*
* http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.hadoop.hbase.client;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicLong;
import org.apache.yetus.audience.InterfaceAudience;
/**
* Keeps track of repeated failures to any region server. Multiple threads manipulate the contents
* of this thread. Access to the members is guarded by the concurrent nature of the members
* inherently.
*/
@InterfaceAudience.Private
class FailureInfo {
// The number of consecutive failures.
final AtomicLong numConsecutiveFailures = new AtomicLong();
// The time when the server started to become unresponsive
// Once set, this would never be updated.
final long timeOfFirstFailureMilliSec;
// The time when the client last tried to contact the server.
// This is only updated by one client at a time
volatile long timeOfLatestAttemptMilliSec;
// Used to keep track of concurrent attempts to contact the server.
// In Fast fail mode, we want just one client thread to try to connect
// the rest of the client threads will fail fast.
final AtomicBoolean exclusivelyRetringInspiteOfFastFail = new AtomicBoolean(false);
@Override
public String toString() {
return "FailureInfo: numConsecutiveFailures = " + numConsecutiveFailures
+ " timeOfFirstFailureMilliSec = " + timeOfFirstFailureMilliSec
+ " timeOfLatestAttemptMilliSec = " + timeOfLatestAttemptMilliSec
+ " exclusivelyRetringInspiteOfFastFail = " + exclusivelyRetringInspiteOfFastFail.get();
}
FailureInfo(long firstFailureTime) {
this.timeOfFirstFailureMilliSec = firstFailureTime;
}
}