risdenk commented on a change in pull request #553: SOLR-9515: Update to Hadoop
3
URL: https://github.com/apache/lucene-solr/pull/553#discussion_r253096125
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File path: solr/core/src/test/org/apache/solr/cloud/hdfs/HdfsTestUtil.java
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@@ -239,4 +253,24 @@ public static String getURI(MiniDFSCluster dfsCluster) {
}
}
+ /**
+ * By default in JDK9+, the ForkJoinWorkerThreadFactory does not give
SecurityManager permissions
+ * to threads that are created. This works around that with a custom thread
factory.
+ * See SOLR-9515 and HDFS-14251
+ * Used in
org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.BlockPoolSlice
+ */
+ public static class HDFSForkJoinThreadFactory implements
ForkJoinPool.ForkJoinWorkerThreadFactory {
+ @Override
+ public ForkJoinWorkerThread newThread(ForkJoinPool pool) {
+ ForkJoinWorkerThread worker = new SecurityManagerWorkerThread(pool);
+ worker.setName("solr-hdfs-threadpool-" + worker.getPoolIndex());
Review comment:
Name used in BadHdfsThreadFilter since this pool is not shutdown correctly
by BlockPoolSlice and not easily worked around. See SOLR-9515 and HDFS-14251
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