[
https://issues.apache.org/jira/browse/HADOOP-19139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17867189#comment-17867189
]
ASF GitHub Bot commented on HADOOP-19139:
-----------------------------------------
saxenapranav commented on code in PR #6699:
URL: https://github.com/apache/hadoop/pull/6699#discussion_r1683878338
##########
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/AzureBlobFileSystemStore.java:
##########
@@ -890,32 +891,37 @@ public AbfsInputStream openFileForRead(Path path,
encryptionContext.getBytes(StandardCharsets.UTF_8));
}
} else {
- AbfsHttpOperation op = client.getPathStatus(relativePath, false,
- tracingContext, null).getResult();
- resourceType = op.getResponseHeader(
- HttpHeaderConfigurations.X_MS_RESOURCE_TYPE);
- contentLength = Long.parseLong(
- op.getResponseHeader(HttpHeaderConfigurations.CONTENT_LENGTH));
- eTag = op.getResponseHeader(HttpHeaderConfigurations.ETAG);
- /*
- * For file created with ENCRYPTION_CONTEXT, client shall receive
- * encryptionContext from header field: X_MS_ENCRYPTION_CONTEXT.
- */
- if (client.getEncryptionType() == EncryptionType.ENCRYPTION_CONTEXT) {
- final String fileEncryptionContext = op.getResponseHeader(
- HttpHeaderConfigurations.X_MS_ENCRYPTION_CONTEXT);
- if (fileEncryptionContext == null) {
- LOG.debug("EncryptionContext missing in GetPathStatus response");
- throw new PathIOException(path.toString(),
- "EncryptionContext not present in GetPathStatus response
headers");
+ if (client.getEncryptionType() == EncryptionType.ENCRYPTION_CONTEXT
Review Comment:
I completely understand that logic has become bit messy and not easy to
read. Have refactored the logic. Hope the new logic is more readable and
understandable:
```
if (fileStatus instanceof VersionedFileStatus) {
VersionedFileStatus versionedFileStatus
= (VersionedFileStatus) fileStatus;
path = path.makeQualified(this.uri, path);
Preconditions.checkArgument(fileStatus.getPath().equals(path),
"Filestatus path [%s] does not match with given path [%s]",
fileStatus.getPath(), path);
resourceType = fileStatus.isFile() ? FILE : DIRECTORY;
contentLength = fileStatus.getLen();
eTag = versionedFileStatus.getVersion();
encryptionContext = versionedFileStatus.getEncryptionContext();
}
if (client.getEncryptionType() == EncryptionType.ENCRYPTION_CONTEXT) {
if (encryptionContext == null) {
PathInformation pathInformation = getPathInformation(relativePath,
tracingContext);
resourceType = pathInformation.getResourceType();
contentLength = Long.parseLong(pathInformation.getContentLength());
eTag = pathInformation.getETag();
encryptionContext = pathInformation.getEncryptionContext();
if (encryptionContext == null) {
LOG.debug("EncryptionContext missing in GetPathStatus response");
throw new PathIOException(path.toString(),
"EncryptionContext not present in GetPathStatus response
headers");
}
}
contextEncryptionAdapter = new ContextProviderEncryptionAdapter(
client.getEncryptionContextProvider(), getRelativePath(path),
encryptionContext.getBytes(StandardCharsets.UTF_8));
} else if (fileStatus == null
&& !abfsConfiguration.isInputStreamLazyOptimizationEnabled()) {
PathInformation pathInformation = getPathInformation(relativePath,
tracingContext);
resourceType = pathInformation.getResourceType();
contentLength = Long.parseLong(pathInformation.getContentLength());
eTag = pathInformation.getETag();
}
if (parseIsDirectory(resourceType)) {
throw new AbfsRestOperationException(
AzureServiceErrorCode.PATH_NOT_FOUND.getStatusCode(),
AzureServiceErrorCode.PATH_NOT_FOUND.getErrorCode(),
"openFileForRead must be used with files and not directories",
null);
}
```
> [ABFS]: No GetPathStatus call for opening AbfsInputStream
> ---------------------------------------------------------
>
> Key: HADOOP-19139
> URL: https://issues.apache.org/jira/browse/HADOOP-19139
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Reporter: Pranav Saxena
> Assignee: Pranav Saxena
> Priority: Major
> Labels: pull-request-available
>
> Read API gives contentLen and etag of the path. This information would be
> used in future calls on that inputStream. Prior information of eTag is of not
> much importance.
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