InMemoryFileSystem.reserveSpaceWithChecksum does not look at failures while
reserving space for the file in question
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Key: HADOOP-3030
URL: https://issues.apache.org/jira/browse/HADOOP-3030
Project: Hadoop Core
Issue Type: Bug
Components: fs
Reporter: Devaraj Das
Fix For: 0.17.0
The return statement code in InMemoryFileSystem.reserveSpaceWithCheckSum looks
like
{noformat}
return (mfs.reserveSpace(f, size) && mfs.reserveSpace(getChecksumFile(f),
checksumSize));
{noformat}
This should be broken up to check for successful reserveSpace for each of the
components. In some cases, we might reserve space for the first component and
fail while doing the same for the second (checksum file). This will lead to
wastage of space since we don't un-reserve the space we got for the first
component. This usually won't happen due to the policy associated with creating
a file in the InMemoryFileSystem (since the checksum component is usually very
small) but still it should be fixed.
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