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Set min replicate to 0 and unpin file if we fail to replicate a file #17865

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Aug 1, 2023
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@
import alluxio.conf.Configuration;
import alluxio.exception.status.NotFoundException;
import alluxio.grpc.RemoveBlockRequest;
import alluxio.grpc.SetAttributePOptions;
import alluxio.job.RunTaskContext;
import alluxio.job.SelectExecutorsContext;
import alluxio.job.plan.AbstractVoidPlanDefinition;
Expand All @@ -37,6 +38,7 @@
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.Collections;
import java.util.List;
import java.util.Set;
Expand Down Expand Up @@ -168,8 +170,25 @@ private void replicate(SetReplicaConfig config, RunTaskContext context) throws E
// to avoid the the race between "replicate" and "rename", so that even a file to replicate is
// renamed, the job is still working on the correct file.
URIStatus status = context.getFileSystem().getStatus(new AlluxioURI(config.getPath()));

JobUtils.loadBlock(status, context.getFsContext(), config.getBlockId(), null, false);
try {
JobUtils.loadBlock(status, context.getFsContext(), config.getBlockId(), null, false);
} catch (IOException e) {
// This will remove the file from the pinlist if it fails to replicate, there can be false
// positives because replication can fail transiently and this would unpin it. However,
// compared to repeatedly replicating, this is a more acceptable result.
LOG.warn("Replication of {} failed, reduce min replication to 0 and unpin. Reason: {} ",
status.getPath(), e.getMessage());
SetAttributePOptions.Builder optionsBuilder =
SetAttributePOptions.newBuilder();
try {
context.getFileSystem().setAttribute(new AlluxioURI(config.getPath()),
optionsBuilder.setReplicationMin(0).setPinned(false).build());
} catch (Throwable e2) {
e.addSuppressed(e2);
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@apc999 apc999 Jul 31, 2023

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add LOG.warn here so at least we can find this suppressed issues in logs

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done

LOG.warn("Attempt to set min replication to 0 and unpin failed due to ", e2);
}
throw e;
}
LOG.info("Replicated file " + config.getPath() + " block " + config.getBlockId());
}
}
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