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https://issues.apache.org/jira/browse/JCLOUDS-1488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16746537#comment-16746537
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Andrew Gaul commented on JCLOUDS-1488:
--------------------------------------
I agree with your diagnosis and this is a long-standing shortcoming of the
filesystem provider. Could you submit a pull request with your proposed
solution? See also
[JCLOUDS-1371|https://issues.apache.org/jira/browse/JCLOUDS-1371].
> Filesystem list call with prefix is slow in large containers
> ------------------------------------------------------------
>
> Key: JCLOUDS-1488
> URL: https://issues.apache.org/jira/browse/JCLOUDS-1488
> Project: jclouds
> Issue Type: Bug
> Components: jclouds-blobstore
> Affects Versions: 2.1.1
> Environment: Java version: java version "1.8.0_131"
> Operating system: Fedora 27 x86_64
> Reporter: Lari Sinisalo
> Priority: Major
> Labels: filesystem
> Attachments: JCLOUDS1488.java
>
>
> When the filesystem blobstore is used, running the following code takes very
> long if there are a lot of files in the container:
> {code:java}
> ListContainerOptions options = new ListContainerOptions();
> options.prefix("test-container-subdirectory/");
> Set<? extends StorageMetadata> results =
> blobStore.list("test-container",options);
> {code}
> See the attached Java source file [^JCLOUDS1488.java] for the full code.
> On my system, running the attached Java code takes over 10 seconds to list a
> single file if there are 500,000 files in the container outside that prefix.
> Output from the attached code:
> {code:java}
> Number of blobs listed: 1
> First listed blob: test-container-subdirectory/file-to-list
> Time it took to list the blobs: 13256 ms
> {code}
> A more general version of this problem was reported previously in
> JCLOUDS-1371.
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