Lisheng Sun created HDFS-14701:
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Summary: Change Log Level to warn in SlotReleaser
Key: HDFS-14701
URL: https://issues.apache.org/jira/browse/HDFS-14701
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Lisheng Sun
{code:java}
// @Override
public void run() {
LOG.trace("{}: about to release {}", ShortCircuitCache.this, slot);
final DfsClientShm shm = (DfsClientShm)slot.getShm();
final DomainSocket shmSock = shm.getPeer().getDomainSocket();
final String path = shmSock.getPath();
boolean success = false;
try (DomainSocket sock = DomainSocket.connect(path);
DataOutputStream out = new DataOutputStream(
new BufferedOutputStream(sock.getOutputStream()))) {
new Sender(out).releaseShortCircuitFds(slot.getSlotId());
DataInputStream in = new DataInputStream(sock.getInputStream());
ReleaseShortCircuitAccessResponseProto resp =
ReleaseShortCircuitAccessResponseProto.parseFrom(
PBHelperClient.vintPrefixed(in));
if (resp.getStatus() != Status.SUCCESS) {
String error = resp.hasError() ? resp.getError() : "(unknown)";
throw new IOException(resp.getStatus().toString() + ": " + error);
}
LOG.trace("{}: released {}", this, slot);
success = true;
} catch (IOException e) {
LOG.error(ShortCircuitCache.this + ": failed to release " +
"short-circuit shared memory slot " + slot + " by sending " +
"ReleaseShortCircuitAccessRequestProto to " + path +
". Closing shared memory segment.", e);
} finally {
if (success) {
shmManager.freeSlot(slot);
} else {
shm.getEndpointShmManager().shutdown(shm);
}
}
}
{code}
2019-08-05,15:28:03,838 ERROR [ShortCircuitCache_SlotReleaser]
org.apache.hadoop.hdfs.shortcircuit.ShortCircuitCache:
ShortCircuitCache(0x65849546): failed to release short-circuit shared memory
slot Slot(slotIdx=62, shm=DfsClientShm(70593ef8b3d84cba3c2f0a1e81377eb1)) by
sending ReleaseShortCircuitAccessRequestProto to
/home/work/app/hdfs/c3micloudsrv-hdd/datanode/dn_socket. Closing shared memory
segment.
java.io.IOException: ERROR_INVALID: there is no shared memory segment
registered with shmId 70593ef8b3d84cba3c2f0a1e81377eb1
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