perf: optimize cache listing for local, ssh and hdfs #2836
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Contributor
Suor
commented
Nov 22, 2019
•
Suor
commented
- make all three lazy
- simplify local one
- use deque instead of list for hdfs
- make all three lazy - simplify local one - use deque instead of list for hdfs
pared
reviewed
Nov 25, 2019
Comment on lines
+267
to
+269
| # If we simply return an iterator then with above closes instantly | ||
| for path in ssh.walk_files(self.path_info.path): | ||
| yield path |
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Wouldn't that mean that connection will be open until the iterator is closed?
Considering that now it is used only in remote.all, which was supposed to create a generator in the first place this change is good.
I am just wondering if it will not become fragile if, in the future, we will start to wrap some logic around this method (for any reason). But also, I am worrying prematurely here. I just wanted to ask this and keep in mind for the future.
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Yes, this will hold the connection open. Not sure this will be an issue.
pared
approved these changes
Nov 25, 2019
|
@MrOutis may you take a look at this? |
ghost
reviewed
Nov 28, 2019
| @@ -68,15 +64,15 @@ def hadoop_fs(self, cmd, user=None): | |||
| close_fds = os.name != "nt" | |||
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| executable = os.getenv("SHELL") if os.name != "nt" else None | |||
| p = Popen( | |||
| p = subprocess.Popen( | |||
ghost
approved these changes
Nov 28, 2019
|
Thank you @Suor ! 🙏 |
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