Steve Loughran created HADOOP-18521:
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Summary: ABFS ReadBufferManager buffer sharing across concurrent
HTTP requests
Key: HADOOP-18521
URL: https://issues.apache.org/jira/browse/HADOOP-18521
Project: Hadoop Common
Issue Type: Bug
Components: fs/azure
Affects Versions: 3.3.4, 3.3.3, 3.3.2
Reporter: Steve Loughran
Assignee: Steve Loughran
AbfsInputStream.close() can trigger the return of buffers used for active
prefetch GET requests into the ReadBufferManager free buffer pool.
A subsequent prefetch by a different stream in the same process may acquire
this same buffer. This can lead to risk of corruption of its own prefetched
data, data which may then be returned to that other thread.
On releases without the fix for this (3.3.2 to 3.3.4), the bug can be avoided
by disabling all prefetching
{code}
fs.azure.readaheadqueue.depth
{code}
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