fatkun created HDFS-12209:
-----------------------------
Summary: VolumeScanner scan cursor not save periodic
Key: HDFS-12209
URL: https://issues.apache.org/jira/browse/HDFS-12209
Project: Hadoop HDFS
Issue Type: Bug
Components: hdfs
Affects Versions: 2.6.0
Environment: cdh5.4.0
Reporter: fatkun
The bug introduce from HDFS-7430 , the time is not same, one is monotonicMs and
other is clock time
VolumeScanner.java
{code:java}
long saveDelta = monotonicMs - curBlockIter.getLastSavedMs();
if (saveDelta >= conf.cursorSaveMs) {
LOG.debug("{}: saving block iterator {} after {} ms.",
this, curBlockIter, saveDelta);
saveBlockIterator(curBlockIter);
}
{code}
curBlockIter.getLastSavedMs() init here
FsVolumeImpl.java
{code:java}
BlockIteratorState() {
lastSavedMs = iterStartMs = Time.now();
curFinalizedDir = null;
curFinalizedSubDir = null;
curEntry = null;
atEnd = false;
}
{code}
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