/**
* Use local LRU to evict data, and get <code> requestBytes </code> available space.
*
* @param requestBytes The data requested.
* @return <code> true </code> if the space is granted, <code> false </code> if not.
*/
private boolean memoryEvictionLRU(long requestBytes) {
Set<Integer> pinList;
try {
pinList = mMasterClient.worker_getPinIdList();
} catch (TException e) {
LOG.error(e.getMessage());
pinList = new HashSet<Integer>();
}
synchronized (mLatestBlockAccessTimeMs) {
synchronized (mUsersPerLockedBlock) {
while (mWorkerSpaceCounter.getAvailableBytes() < requestBytes) {
long blockId = -1;
long latestTimeMs = Long.MAX_VALUE;
for (Entry<Long, Long> entry : mLatestBlockAccessTimeMs.entrySet()) {
if (entry.getValue() < latestTimeMs
&& !pinList.contains(BlockInfo.computeInodeId(entry.getKey()))) {
if (!mUsersPerLockedBlock.containsKey(entry.getKey())) {
blockId = entry.getKey();
latestTimeMs = entry.getValue();
}
}
}
if (blockId != -1) {
freeBlock(blockId);
} else {
return false;
}
}
}
}
return true;
}
