dlmarion commented on code in PR #3076:
URL: https://github.com/apache/accumulo/pull/3076#discussion_r1021932231
##########
server/tserver/src/main/java/org/apache/accumulo/tserver/log/DfsLogger.java:
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@@ -417,6 +417,13 @@ public synchronized void open(String address) throws
IOException {
else
logFile = fs.create(logfilePath, true, 0, replication, blockSize);
+ // Tell the DataNode that the write ahead log does not need to be cached
in the OS page cache
+ try {
+ logFile.setDropBehind(Boolean.TRUE);
Review Comment:
Javadoc says that if parameter is null, then it defaults to configuration,
which should be the value of `dfs.datanode.drop.cache.behind.writes`
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