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  1. HBase
  2. HBASE-21749

RS UI may throw NPE and make rs-status page inaccessible with multiwal and replication

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    Description

      Sometimes RS UI is unable to open as we get a NPE; This happens because shipper.getCurrentPath() may return null.

      We should have a null check @ ReplicationSource.java#L331 

            Path currentPath = shipper.getCurrentPath();
      try {
        fileSize = getFileSize(currentPath);
      } catch (IOException e) {
        LOG.warn("Ignore the exception as the file size of HLog only affects the web ui", e);
        fileSize = -1;
      }

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          relates to

          Sub-task - The sub-task of the issue HBASE-20193 Basic Replication Web UI - Regionserver

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved

          Sub-task - The sub-task of the issue HBASE-21680 Port HBASE-20194 (Basic Replication WebUI - Master) and HBASE-20193 (Basic Replication Web UI - Regionserver) to branch-1

          • Major - Major loss of function.
          • Resolved

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              nihaljain.cs Nihal Jain
              nihaljain.cs Nihal Jain
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