Matteo Bertozzi created HBASE-14128:
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Summary: Fix inability to run Multiple MR over the same Snapshot
Key: HBASE-14128
URL: https://issues.apache.org/jira/browse/HBASE-14128
Project: HBase
Issue Type: Bug
Components: mapreduce, snapshots
Reporter: Matteo Bertozzi
Priority: Minor
from the list, running multiple MR over the same snapshot does not work
{code}
public static void copySnapshotForScanner(Configuration conf, FileSystem ..
RestoreSnapshotHelper helper = new RestoreSnapshotHelper(conf, fs,
manifest, manifest.getTableDescriptor(), restoreDir, monitor, status);
{code}
the problem is that manifest.getTableDescriptor() will try to clone the
snapshot with the same target name. ending up in "file already exist"
exceptions.
we just need to clone that descriptor and generate a new target table name
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