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Implement an offline mode for a distributed node (#4646)

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Implement an offline mode for remote storage to cache the
offline status of a node in order to prevent network calls
that are bound to fail. After a time interval an attempt
will be made to restore the connection and mark the node
as online if successful.

Fixes #4183
This commit is contained in:
Frank Wessels
2017-08-11 11:38:46 -07:00
committed by Harshavardhana
parent 1978b9d8f9
commit 98b62cbec8
6 changed files with 227 additions and 125 deletions
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2
cmd/prepare-storage.go
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@@ -341,6 +341,7 @@ func waitForFormatXLDisks(firstDisk bool, endpoints EndpointList, storageDisks [
maxRetryAttempts: globalStorageInitRetryThreshold,
retryUnit: time.Second,
retryCap: time.Second * 30, // 30 seconds.
offlineTimestamp: UTCNow(),
}
}
@@ -361,6 +362,7 @@ func waitForFormatXLDisks(firstDisk bool, endpoints EndpointList, storageDisks [
maxRetryAttempts: globalStorageRetryThreshold,
retryUnit: time.Millisecond,
retryCap: time.Millisecond * 5, // 5 milliseconds.
offlineTimestamp: UTCNow(), // Set timestamp to prevent immediate marking as offline
}
}