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HADOOP-15042. Azure PageBlobInputStream.skip() can return negative value when numberOfPagesRemaining is 0.

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Contributed by Rajesh Balamohan
This commit is contained in:
Steve Loughran 2017-11-28 11:52:59 +00:00
parent 94bed50471
commit 0ea182d0fa
1 changed files with 2 additions and 2 deletions
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4
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azure/PageBlobInputStream.java
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@ -343,9 +343,9 @@ private long skipImpl(long n) throws IOException {
// Skip over whole pages as necessary without retrieving them from the
// server.
long pagesToSkipOver = Math.min(
long pagesToSkipOver = Math.max(0, Math.min(
n / PAGE_DATA_SIZE,
numberOfPagesRemaining - 1);
numberOfPagesRemaining - 1));
numberOfPagesRemaining -= pagesToSkipOver;
currentOffsetInBlob += pagesToSkipOver * PAGE_SIZE;
skipped += pagesToSkipOver * PAGE_DATA_SIZE;