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Posted to yarn-issues@hadoop.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2022/10/31 15:47:00 UTC

[jira] [Commented] (YARN-11364) Docker Container to accept docker Image name with sha256 digest

    [ https://issues.apache.org/jira/browse/YARN-11364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17626661#comment-17626661 ] 

ASF GitHub Bot commented on YARN-11364:
---------------------------------------

cnauroth commented on code in PR #5092:
URL: https://github.com/apache/hadoop/pull/5092#discussion_r1009574652


##########
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/TestDockerContainerRuntime.java:
##########
@@ -2033,19 +2033,16 @@ public static Configuration enableMockContainerExecutor(Configuration conf) {
 
   @Test
   public void testDockerImageNamePattern() throws Exception {
-    String[] validNames =
-        { "ubuntu", "fedora/httpd:version1.0",
-            "fedora/httpd:version1.0.test",
-            "fedora/httpd:version1.0.TEST",
-            "myregistryhost:5000/ubuntu",
-            "myregistryhost:5000/fedora/httpd:version1.0",
-            "myregistryhost:5000/fedora/httpd:version1.0.test",
-            "myregistryhost:5000/fedora/httpd:version1.0.TEST"};
-
-    String[] invalidNames = { "Ubuntu", "ubuntu || fedora", "ubuntu#",
-        "myregistryhost:50AB0/ubuntu", "myregistry#host:50AB0/ubuntu",
-        ":8080/ubuntu"
-    };
+    String[] validNames = {"ubuntu", "fedora/httpd:version1.0", "fedora/httpd:version1.0.test",
+        "fedora/httpd:version1.0.TEST", "myregistryhost:5000/ubuntu",
+        "myregistryhost:5000/fedora/httpd:version1.0",
+        "myregistryhost:5000/fedora/httpd:version1.0.test",
+        "myregistryhost:5000/fedora/httpd:version1.0.TEST",
+        "123456789123.dkr.ecr.us-east-1.amazonaws.com/emr-docker-examples:pyspark-example"
+            + "@sha256:f1d4ae3f7261a72e98c6ebefe9985cf10a0ea5bd762585a43e0700ed99863807"};
+
+    String[] invalidNames = {"Ubuntu", "ubuntu || fedora", "ubuntu#", "myregistryhost:50AB0/ubuntu",

Review Comment:
   I suggest also adding new negative tests here to make sure `DOCKER_DIGEST_PATTERN` doesn't match inputs that we don't want it to match. For example:
   
   ```
   // Invalid: contains "@sha256" but doesn't really contain a digest.
   "123456789123.dkr.ecr.us-east-1.amazonaws.com/emr-docker-examples:pyspark-example@sha256"
   
   // Invalid: digest is too short.
   "123456789123.dkr.ecr.us-east-1.amazonaws.com/emr-docker-examples:pyspark-example@sha256:f1d4"
   
   // Invalid: digest is too long (depending on if we take my code review feedback on the regex).
   "123456789123.dkr.ecr.us-east-1.amazonaws.com/emr-docker-examples:pyspark-example@sha256:f1d4ae3f7261a72e98c6ebefe9985cf10a0ea5bd762585a43e0700ed99863807f"
   ```
   



##########
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/DockerLinuxContainerRuntime.java:
##########
@@ -208,6 +208,8 @@ public class DockerLinuxContainerRuntime extends OCIContainerRuntime {
   private static final Pattern dockerImagePattern =
       Pattern.compile(DOCKER_IMAGE_PATTERN);
 
+  private static final Pattern DOCKER_DIGEST_PATTERN = Pattern.compile("^sha256:[a-z0-9]{32,}$");

Review Comment:
   This allows "sha256:" followed by anywhere from 32 to an infinite number of characters. The maximum length of a SHA-256 is 64 characters. I believe Docker allows referencing a shortened SHA-256 as small as 12 characters, though I'm having trouble finding documentation to back that up.
   
   Maybe we should go with either `{32,64}` or `{12,64}`?





> Docker Container to accept docker Image name with sha256 digest
> ---------------------------------------------------------------
>
>                 Key: YARN-11364
>                 URL: https://issues.apache.org/jira/browse/YARN-11364
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: yarn
>            Reporter: Ashutosh Gupta
>            Assignee: Ashutosh Gupta
>            Priority: Major
>              Labels: pull-request-available
>
> Docker Container to accept docker Image name with sha256 digest. 
> While using docker and passing the using sha digest as docker image. It should be valid and not throw error. eg -
> {code:java}
> 123456789123.dkr.ecr.us-east-1.amazonaws.com/emr-docker-examples:pyspark-example@sha256:f1d4ae3f7261a72e98c6ebefe9985cf10a0ea5bd762585a43e0700ed99863807{code}
> should be valid and not throw error.



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