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HADOOP-14048. REDO operation of WASB#AtomicRename should create placeholder blob for destination folder. Contributed by NITIN VERMA

This commit is contained in:
Mingliang Liu 2017-03-06 16:53:30 -08:00
parent b5adc5c301
commit c571cda5c7
1 changed files with 10 additions and 0 deletions
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10
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azure/NativeAzureFileSystem.java
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@ -566,6 +566,16 @@ public class NativeAzureFileSystem extends FileSystem {
// Remove the source folder. Don't check explicitly if it exists,
// to avoid triggering redo recursively.
try {
// Rename the source folder 0-byte root file
// as destination folder 0-byte root file.
FileMetadata srcMetaData = this.getSourceMetadata();
if (srcMetaData.getBlobMaterialization() == BlobMaterialization.Explicit) {
// We already have a lease. So let's just rename the source blob
// as destination blob under same lease.
fs.getStoreInterface().rename(this.getSrcKey(), this.getDstKey(), false, lease);
}
// Now we can safely delete the source folder.
fs.getStoreInterface().delete(srcKey, lease);
} catch (Exception e) {
LOG.info("Unable to delete source folder during folder rename redo. "